diff --git a/MANIFEST.in b/MANIFEST.in
index dc4c575fe1343ac222be57a9d056e0b766d01183..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1 +0,0 @@
-exclude lifescale/models/ls_run.py lifescale/scripts/run_gui.py
\ No newline at end of file
diff --git a/README.md b/README.md
index 790f66901c4fb10be2aa7dbc48e4712db4409f8d..f649c3c751750690a06c78b5f0563b4f2bcc09a7 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,10 @@
 # lifescale_utils
-Data analysis tools for lifescale with GUI.
+Data analysis utility tools for lifescale.
 
 # Command line programs:
 
 ## ls2csv
-The program *ls2csv* reads the content of the xlsm files written by lifescale units, parses the data and writes them to three csv 
+*ls2csv* is a command line program that reads the content of the xlsm files written by lifescale units, parses the data and writes them to three csv 
 files (where `[run-name]` is the name from the settings sheet):
   * `Masses_Vibrio_[run-name].csv`: Data series from the sheet AcquisitionIntervals.
   * `Metadata_[run-name].csv`: Data from the sheet PanelData.
@@ -12,7 +12,9 @@ files (where `[run-name]` is the name from the settings sheet):
 
 ### Usage:
 ```
-ls2csv -i [path and nale of xlsm file] -o [outpur directory] [-s] [-nv]
+usage: ls2csv [-h] -i INPUT_XLSM -o OUT_DIR [-nv] [-s] [-t]
+
+Conversion from lifescale xlsm output to csv files
 
 options:
   -h, --help            show this help message and exit
@@ -30,6 +32,7 @@ options:
   -t, --sort-masses-by-time
                         Sort data in the Masses CSV file by acquisition time.
                         (default: False)
+
 ```
 
 
diff --git a/lifescale/__init__.py b/lifescale/__init__.py
index af1d517ca89f1f94b3c97b63573cf5f95052ea4e..24dea2a1e8fb2d43c93cda9c7681b444dbd5a319 100644
--- a/lifescale/__init__.py
+++ b/lifescale/__init__.py
@@ -17,8 +17,9 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
     Andreas Hellerschmied (heller182@gmx.at)
 """
 
-__version__ = '0.0.3'
+__version__ = '0.0.6'
 __author__ = 'Andreas Hellerschmied'
-__git_repo__ = 'tba'
+__git_repo__ = 'https://gitlab.com/hellerdev/lifescale_utils'
 __email__ = 'heller182@gmx.at'
-__copyright__ = '(c) 2022 Andreas Hellerschmied'
+__copyright__ = '(c) 2023 Andreas Hellerschmied'
+__pypi_repo__ = 'https://pypi.org/project/lifescale-utils/'
diff --git a/lifescale/command_line/command_line.py b/lifescale/command_line/command_line.py
index 86eff8c7e93ef09e30808abb4131271f212586ac..561c11572ea8f99670bf17e923a4f60e4839d689 100644
--- a/lifescale/command_line/command_line.py
+++ b/lifescale/command_line/command_line.py
@@ -17,6 +17,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 """
 
 from lifescale.scripts.ls2csv import ls2csv as ls2csv_main
+from lifescale.scripts.run_gui import run_gui as run_gui_main
 import argparse
 import os
 
@@ -70,6 +71,18 @@ def ls2csv():
                        verbose=verbose)
 
 
+def lsgui():
+    """Start lifescale utils gui."""
+    parser = argparse.ArgumentParser(prog="lsgui",
+                                     description="Starts lifescale utils gui.",
+                                     epilog="Start the graphical user interface (gui) of lifescale utils.",
+                                     formatter_class=argparse.ArgumentDefaultsHelpFormatter)
+
+    args = parser.parse_args()
+
+    return run_gui_main()
+
+
 if __name__ == '__main__':
     """Main function for debugging and testing."""
     ls2csv()
diff --git a/lifescale/gui/MainWindow.py b/lifescale/gui/MainWindow.py
index e1d6bff8ecfb591c724f5d042341995d0d985ac8..66f013826b13566e05ecc65ff4c62de3546d0da7 100644
--- a/lifescale/gui/MainWindow.py
+++ b/lifescale/gui/MainWindow.py
@@ -1,6 +1,6 @@
 # Form implementation generated from reading ui file 'lifescale/gui/MainWindow.ui'
 #
-# Created by: PyQt6 UI code generator 6.2.1
+# Created by: PyQt6 UI code generator 6.4.0
 #
 # WARNING: Any manual changes made to this file will be lost when pyuic6 is
 # run again.  Do not edit this file unless you know what you are doing.
@@ -12,150 +12,269 @@ from PyQt6 import QtCore, QtGui, QtWidgets
 class Ui_MainWindow(object):
     def setupUi(self, MainWindow):
         MainWindow.setObjectName("MainWindow")
-        MainWindow.resize(992, 616)
+        MainWindow.resize(1277, 728)
         self.centralwidget = QtWidgets.QWidget(MainWindow)
         self.centralwidget.setObjectName("centralwidget")
         self.verticalLayout = QtWidgets.QVBoxLayout(self.centralwidget)
         self.verticalLayout.setObjectName("verticalLayout")
         self.tabWidget_Main = QtWidgets.QTabWidget(self.centralwidget)
+        self.tabWidget_Main.setTabPosition(QtWidgets.QTabWidget.TabPosition.East)
         self.tabWidget_Main.setObjectName("tabWidget_Main")
-        self.tab_peaks = QtWidgets.QWidget()
-        self.tab_peaks.setObjectName("tab_peaks")
-        self.verticalLayout_2 = QtWidgets.QVBoxLayout(self.tab_peaks)
+        self.tab_LSData = QtWidgets.QWidget()
+        self.tab_LSData.setObjectName("tab_LSData")
+        self.verticalLayout_4 = QtWidgets.QVBoxLayout(self.tab_LSData)
+        self.verticalLayout_4.setObjectName("verticalLayout_4")
+        self.splitter = QtWidgets.QSplitter(self.tab_LSData)
+        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Policy.Expanding, QtWidgets.QSizePolicy.Policy.Preferred)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.splitter.sizePolicy().hasHeightForWidth())
+        self.splitter.setSizePolicy(sizePolicy)
+        self.splitter.setOrientation(QtCore.Qt.Orientation.Horizontal)
+        self.splitter.setChildrenCollapsible(False)
+        self.splitter.setObjectName("splitter")
+        self.layoutWidget = QtWidgets.QWidget(self.splitter)
+        self.layoutWidget.setObjectName("layoutWidget")
+        self.verticalLayout_2 = QtWidgets.QVBoxLayout(self.layoutWidget)
+        self.verticalLayout_2.setSizeConstraint(QtWidgets.QLayout.SizeConstraint.SetDefaultConstraint)
+        self.verticalLayout_2.setContentsMargins(0, 0, 0, 0)
         self.verticalLayout_2.setObjectName("verticalLayout_2")
-        self.groupBox_data = QtWidgets.QGroupBox(self.tab_peaks)
-        self.groupBox_data.setObjectName("groupBox_data")
-        self.formLayout = QtWidgets.QFormLayout(self.groupBox_data)
+        self.listWidget_Samples = QtWidgets.QListWidget(self.layoutWidget)
+        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Policy.MinimumExpanding, QtWidgets.QSizePolicy.Policy.Expanding)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.listWidget_Samples.sizePolicy().hasHeightForWidth())
+        self.listWidget_Samples.setSizePolicy(sizePolicy)
+        self.listWidget_Samples.setMinimumSize(QtCore.QSize(150, 0))
+        self.listWidget_Samples.setMaximumSize(QtCore.QSize(16777215, 16777215))
+        self.listWidget_Samples.setObjectName("listWidget_Samples")
+        self.verticalLayout_2.addWidget(self.listWidget_Samples)
+        self.groupBox_LSDataOptions = QtWidgets.QGroupBox(self.layoutWidget)
+        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Policy.MinimumExpanding, QtWidgets.QSizePolicy.Policy.Preferred)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.groupBox_LSDataOptions.sizePolicy().hasHeightForWidth())
+        self.groupBox_LSDataOptions.setSizePolicy(sizePolicy)
+        self.groupBox_LSDataOptions.setMinimumSize(QtCore.QSize(150, 0))
+        self.groupBox_LSDataOptions.setMaximumSize(QtCore.QSize(16777215, 16777215))
+        self.groupBox_LSDataOptions.setObjectName("groupBox_LSDataOptions")
+        self.verticalLayout_8 = QtWidgets.QVBoxLayout(self.groupBox_LSDataOptions)
+        self.verticalLayout_8.setObjectName("verticalLayout_8")
+        self.pushButton_resetMassLimits = QtWidgets.QPushButton(self.groupBox_LSDataOptions)
+        self.pushButton_resetMassLimits.setObjectName("pushButton_resetMassLimits")
+        self.verticalLayout_8.addWidget(self.pushButton_resetMassLimits)
+        self.checkBox_MassesShowTable = QtWidgets.QCheckBox(self.groupBox_LSDataOptions)
+        self.checkBox_MassesShowTable.setChecked(True)
+        self.checkBox_MassesShowTable.setObjectName("checkBox_MassesShowTable")
+        self.verticalLayout_8.addWidget(self.checkBox_MassesShowTable)
+        self.verticalLayout_2.addWidget(self.groupBox_LSDataOptions)
+        self.tabWidget_LSData = QtWidgets.QTabWidget(self.splitter)
+        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Policy.Expanding, QtWidgets.QSizePolicy.Policy.Expanding)
+        sizePolicy.setHorizontalStretch(1)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.tabWidget_LSData.sizePolicy().hasHeightForWidth())
+        self.tabWidget_LSData.setSizePolicy(sizePolicy)
+        self.tabWidget_LSData.setObjectName("tabWidget_LSData")
+        self.tab_LSData_hist = QtWidgets.QWidget()
+        self.tab_LSData_hist.setObjectName("tab_LSData_hist")
+        self.verticalLayout_9 = QtWidgets.QVBoxLayout(self.tab_LSData_hist)
+        self.verticalLayout_9.setObjectName("verticalLayout_9")
+        self.GraphicsLayoutWidget_SampelHistogram = GraphicsLayoutWidget(self.tab_LSData_hist)
+        self.GraphicsLayoutWidget_SampelHistogram.setObjectName("GraphicsLayoutWidget_SampelHistogram")
+        self.verticalLayout_9.addWidget(self.GraphicsLayoutWidget_SampelHistogram)
+        self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
+        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
+        self.groupBoxLSDataSampleStatistics = QtWidgets.QGroupBox(self.tab_LSData_hist)
+        self.groupBoxLSDataSampleStatistics.setObjectName("groupBoxLSDataSampleStatistics")
+        self.horizontalLayout = QtWidgets.QHBoxLayout(self.groupBoxLSDataSampleStatistics)
+        self.horizontalLayout.setObjectName("horizontalLayout")
+        self.formLayout = QtWidgets.QFormLayout()
         self.formLayout.setObjectName("formLayout")
-        self.label_data_rawData = QtWidgets.QLabel(self.groupBox_data)
-        self.label_data_rawData.setObjectName("label_data_rawData")
-        self.formLayout.setWidget(0, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_data_rawData)
-        self.horizontalLayout_data_rawData = QtWidgets.QHBoxLayout()
-        self.horizontalLayout_data_rawData.setObjectName("horizontalLayout_data_rawData")
-        self.lineEdit_data_rawData = QtWidgets.QLineEdit(self.groupBox_data)
-        self.lineEdit_data_rawData.setObjectName("lineEdit_data_rawData")
-        self.horizontalLayout_data_rawData.addWidget(self.lineEdit_data_rawData)
-        self.pushButton_data_rawData = QtWidgets.QPushButton(self.groupBox_data)
-        self.pushButton_data_rawData.setObjectName("pushButton_data_rawData")
-        self.horizontalLayout_data_rawData.addWidget(self.pushButton_data_rawData)
-        self.formLayout.setLayout(0, QtWidgets.QFormLayout.ItemRole.FieldRole, self.horizontalLayout_data_rawData)
-        self.label_data_metadataFile = QtWidgets.QLabel(self.groupBox_data)
-        self.label_data_metadataFile.setObjectName("label_data_metadataFile")
-        self.formLayout.setWidget(1, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_data_metadataFile)
-        self.horizontalLayout_data_metadataFile = QtWidgets.QHBoxLayout()
-        self.horizontalLayout_data_metadataFile.setObjectName("horizontalLayout_data_metadataFile")
-        self.lineEdit_data_metadataFile = QtWidgets.QLineEdit(self.groupBox_data)
-        self.lineEdit_data_metadataFile.setObjectName("lineEdit_data_metadataFile")
-        self.horizontalLayout_data_metadataFile.addWidget(self.lineEdit_data_metadataFile)
-        self.pushButton_data_metadataFile = QtWidgets.QPushButton(self.groupBox_data)
-        self.pushButton_data_metadataFile.setObjectName("pushButton_data_metadataFile")
-        self.horizontalLayout_data_metadataFile.addWidget(self.pushButton_data_metadataFile)
-        self.formLayout.setLayout(1, QtWidgets.QFormLayout.ItemRole.FieldRole, self.horizontalLayout_data_metadataFile)
-        self.label_data_outputFolder = QtWidgets.QLabel(self.groupBox_data)
-        self.label_data_outputFolder.setObjectName("label_data_outputFolder")
-        self.formLayout.setWidget(2, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_data_outputFolder)
-        self.horizontalLayout_data_outputFolder = QtWidgets.QHBoxLayout()
-        self.horizontalLayout_data_outputFolder.setObjectName("horizontalLayout_data_outputFolder")
-        self.lineEdit_data_outputFolder = QtWidgets.QLineEdit(self.groupBox_data)
-        self.lineEdit_data_outputFolder.setObjectName("lineEdit_data_outputFolder")
-        self.horizontalLayout_data_outputFolder.addWidget(self.lineEdit_data_outputFolder)
-        self.pushButton_data_outputFolder = QtWidgets.QPushButton(self.groupBox_data)
-        self.pushButton_data_outputFolder.setObjectName("pushButton_data_outputFolder")
-        self.horizontalLayout_data_outputFolder.addWidget(self.pushButton_data_outputFolder)
-        self.formLayout.setLayout(2, QtWidgets.QFormLayout.ItemRole.FieldRole, self.horizontalLayout_data_outputFolder)
-        self.label_data_selectExperiment = QtWidgets.QLabel(self.groupBox_data)
-        self.label_data_selectExperiment.setObjectName("label_data_selectExperiment")
-        self.formLayout.setWidget(3, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_data_selectExperiment)
-        self.comboBox_data_selectExperiment = QtWidgets.QComboBox(self.groupBox_data)
-        self.comboBox_data_selectExperiment.setObjectName("comboBox_data_selectExperiment")
-        self.formLayout.setWidget(3, QtWidgets.QFormLayout.ItemRole.FieldRole, self.comboBox_data_selectExperiment)
-        self.verticalLayout_2.addWidget(self.groupBox_data)
-        self.groupBox_processingParameters = QtWidgets.QGroupBox(self.tab_peaks)
-        self.groupBox_processingParameters.setObjectName("groupBox_processingParameters")
-        self.formLayout_2 = QtWidgets.QFormLayout(self.groupBox_processingParameters)
+        self.label = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label.setObjectName("label")
+        self.formLayout.setWidget(0, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label)
+        self.label_SelectedMasse = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_SelectedMasse.setText("")
+        self.label_SelectedMasse.setObjectName("label_SelectedMasse")
+        self.formLayout.setWidget(0, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_SelectedMasse)
+        self.label_3 = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_3.setObjectName("label_3")
+        self.formLayout.setWidget(1, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_3)
+        self.label_selectionLimits = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_selectionLimits.setText("")
+        self.label_selectionLimits.setObjectName("label_selectionLimits")
+        self.formLayout.setWidget(1, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_selectionLimits)
+        self.label_5 = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_5.setObjectName("label_5")
+        self.formLayout.setWidget(2, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_5)
+        self.label_mean = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_mean.setText("")
+        self.label_mean.setObjectName("label_mean")
+        self.formLayout.setWidget(2, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_mean)
+        self.label_7 = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_7.setObjectName("label_7")
+        self.formLayout.setWidget(3, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_7)
+        self.label_median = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_median.setText("")
+        self.label_median.setObjectName("label_median")
+        self.formLayout.setWidget(3, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_median)
+        self.label_9 = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_9.setObjectName("label_9")
+        self.formLayout.setWidget(4, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_9)
+        self.label_std = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_std.setText("")
+        self.label_std.setObjectName("label_std")
+        self.formLayout.setWidget(4, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_std)
+        self.label_11 = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_11.setObjectName("label_11")
+        self.formLayout.setWidget(5, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_11)
+        self.label_iqr = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_iqr.setText("")
+        self.label_iqr.setObjectName("label_iqr")
+        self.formLayout.setWidget(5, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_iqr)
+        self.label_13 = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_13.setObjectName("label_13")
+        self.formLayout.setWidget(6, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_13)
+        self.label_rcv = QtWidgets.QLabel(self.groupBoxLSDataSampleStatistics)
+        self.label_rcv.setText("")
+        self.label_rcv.setObjectName("label_rcv")
+        self.formLayout.setWidget(6, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_rcv)
+        self.horizontalLayout.addLayout(self.formLayout)
+        self.horizontalLayout_2.addWidget(self.groupBoxLSDataSampleStatistics)
+        self.groupBox_histOptions = QtWidgets.QGroupBox(self.tab_LSData_hist)
+        self.groupBox_histOptions.setObjectName("groupBox_histOptions")
+        self.verticalLayout_3 = QtWidgets.QVBoxLayout(self.groupBox_histOptions)
+        self.verticalLayout_3.setObjectName("verticalLayout_3")
+        self.formLayout_2 = QtWidgets.QFormLayout()
         self.formLayout_2.setObjectName("formLayout_2")
-        self.label_massTransformation = QtWidgets.QLabel(self.groupBox_processingParameters)
-        self.label_massTransformation.setObjectName("label_massTransformation")
-        self.formLayout_2.setWidget(0, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_massTransformation)
-        self.doubleSpinBox_massTransformation = QtWidgets.QDoubleSpinBox(self.groupBox_processingParameters)
-        self.doubleSpinBox_massTransformation.setDecimals(6)
-        self.doubleSpinBox_massTransformation.setObjectName("doubleSpinBox_massTransformation")
-        self.formLayout_2.setWidget(0, QtWidgets.QFormLayout.ItemRole.FieldRole, self.doubleSpinBox_massTransformation)
-        self.label_massCutoff = QtWidgets.QLabel(self.groupBox_processingParameters)
-        self.label_massCutoff.setObjectName("label_massCutoff")
-        self.formLayout_2.setWidget(1, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_massCutoff)
-        self.doubleSpinBox_massCutoff = QtWidgets.QDoubleSpinBox(self.groupBox_processingParameters)
-        self.doubleSpinBox_massCutoff.setDecimals(1)
-        self.doubleSpinBox_massCutoff.setObjectName("doubleSpinBox_massCutoff")
-        self.formLayout_2.setWidget(1, QtWidgets.QFormLayout.ItemRole.FieldRole, self.doubleSpinBox_massCutoff)
-        self.label_peakWidthCutoff = QtWidgets.QLabel(self.groupBox_processingParameters)
-        self.label_peakWidthCutoff.setObjectName("label_peakWidthCutoff")
-        self.formLayout_2.setWidget(2, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_peakWidthCutoff)
-        self.doubleSpinBox_peakWidthCutoff = QtWidgets.QDoubleSpinBox(self.groupBox_processingParameters)
-        self.doubleSpinBox_peakWidthCutoff.setDecimals(1)
-        self.doubleSpinBox_peakWidthCutoff.setObjectName("doubleSpinBox_peakWidthCutoff")
-        self.formLayout_2.setWidget(2, QtWidgets.QFormLayout.ItemRole.FieldRole, self.doubleSpinBox_peakWidthCutoff)
-        self.label_peakDistanceCutoff = QtWidgets.QLabel(self.groupBox_processingParameters)
-        self.label_peakDistanceCutoff.setObjectName("label_peakDistanceCutoff")
-        self.formLayout_2.setWidget(3, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_peakDistanceCutoff)
-        self.doubleSpinBox_peakDistanceCutoff = QtWidgets.QDoubleSpinBox(self.groupBox_processingParameters)
-        self.doubleSpinBox_peakDistanceCutoff.setDecimals(1)
-        self.doubleSpinBox_peakDistanceCutoff.setObjectName("doubleSpinBox_peakDistanceCutoff")
-        self.formLayout_2.setWidget(3, QtWidgets.QFormLayout.ItemRole.FieldRole, self.doubleSpinBox_peakDistanceCutoff)
-        self.verticalLayout_2.addWidget(self.groupBox_processingParameters)
-        self.pushButton_run = QtWidgets.QPushButton(self.tab_peaks)
-        self.pushButton_run.setObjectName("pushButton_run")
-        self.verticalLayout_2.addWidget(self.pushButton_run)
-        self.tabWidget_Main.addTab(self.tab_peaks, "")
-        self.tab_analysis = QtWidgets.QWidget()
-        self.tab_analysis.setObjectName("tab_analysis")
-        self.tabWidget_Main.addTab(self.tab_analysis, "")
+        self.label_2 = QtWidgets.QLabel(self.groupBox_histOptions)
+        self.label_2.setObjectName("label_2")
+        self.formLayout_2.setWidget(0, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_2)
+        self.comboBox_histMethod = QtWidgets.QComboBox(self.groupBox_histOptions)
+        self.comboBox_histMethod.setObjectName("comboBox_histMethod")
+        self.formLayout_2.setWidget(0, QtWidgets.QFormLayout.ItemRole.FieldRole, self.comboBox_histMethod)
+        self.label_numberOfBins = QtWidgets.QLabel(self.groupBox_histOptions)
+        self.label_numberOfBins.setObjectName("label_numberOfBins")
+        self.formLayout_2.setWidget(1, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_numberOfBins)
+        self.spinBox_histBins = QtWidgets.QSpinBox(self.groupBox_histOptions)
+        self.spinBox_histBins.setMaximum(1000)
+        self.spinBox_histBins.setStepType(QtWidgets.QAbstractSpinBox.StepType.AdaptiveDecimalStepType)
+        self.spinBox_histBins.setProperty("value", 100)
+        self.spinBox_histBins.setObjectName("spinBox_histBins")
+        self.formLayout_2.setWidget(1, QtWidgets.QFormLayout.ItemRole.FieldRole, self.spinBox_histBins)
+        self.verticalLayout_3.addLayout(self.formLayout_2)
+        self.label_histBinMethodDescription = QtWidgets.QLabel(self.groupBox_histOptions)
+        self.label_histBinMethodDescription.setText("")
+        self.label_histBinMethodDescription.setWordWrap(True)
+        self.label_histBinMethodDescription.setObjectName("label_histBinMethodDescription")
+        self.verticalLayout_3.addWidget(self.label_histBinMethodDescription)
+        self.checkBox_plotMedian = QtWidgets.QCheckBox(self.groupBox_histOptions)
+        self.checkBox_plotMedian.setChecked(False)
+        self.checkBox_plotMedian.setObjectName("checkBox_plotMedian")
+        self.verticalLayout_3.addWidget(self.checkBox_plotMedian)
+        self.checkBox_plotMean = QtWidgets.QCheckBox(self.groupBox_histOptions)
+        self.checkBox_plotMean.setChecked(False)
+        self.checkBox_plotMean.setObjectName("checkBox_plotMean")
+        self.verticalLayout_3.addWidget(self.checkBox_plotMean)
+        self.horizontalLayout_2.addWidget(self.groupBox_histOptions)
+        self.verticalLayout_9.addLayout(self.horizontalLayout_2)
+        self.tabWidget_LSData.addTab(self.tab_LSData_hist, "")
+        self.tab_Masses = QtWidgets.QWidget()
+        self.tab_Masses.setObjectName("tab_Masses")
+        self.verticalLayout_5 = QtWidgets.QVBoxLayout(self.tab_Masses)
+        self.verticalLayout_5.setObjectName("verticalLayout_5")
+        self.tableView_Masses = QtWidgets.QTableView(self.tab_Masses)
+        self.tableView_Masses.setEnabled(True)
+        self.tableView_Masses.setLineWidth(9)
+        self.tableView_Masses.setSizeAdjustPolicy(QtWidgets.QAbstractScrollArea.SizeAdjustPolicy.AdjustToContents)
+        self.tableView_Masses.setObjectName("tableView_Masses")
+        self.verticalLayout_5.addWidget(self.tableView_Masses)
+        self.tabWidget_LSData.addTab(self.tab_Masses, "")
+        self.verticalLayout_4.addWidget(self.splitter)
+        self.tabWidget_Main.addTab(self.tab_LSData, "")
+        self.tab_SampleSummary = QtWidgets.QWidget()
+        self.tab_SampleSummary.setObjectName("tab_SampleSummary")
+        self.verticalLayout_7 = QtWidgets.QVBoxLayout(self.tab_SampleSummary)
+        self.verticalLayout_7.setObjectName("verticalLayout_7")
+        self.tableView_SampleSummary = QtWidgets.QTableView(self.tab_SampleSummary)
+        self.tableView_SampleSummary.setObjectName("tableView_SampleSummary")
+        self.verticalLayout_7.addWidget(self.tableView_SampleSummary)
+        self.tabWidget_Main.addTab(self.tab_SampleSummary, "")
+        self.tab_PanelMetadata = QtWidgets.QWidget()
+        self.tab_PanelMetadata.setObjectName("tab_PanelMetadata")
+        self.verticalLayout_6 = QtWidgets.QVBoxLayout(self.tab_PanelMetadata)
+        self.verticalLayout_6.setObjectName("verticalLayout_6")
+        self.tableView_PanelMetadata = QtWidgets.QTableView(self.tab_PanelMetadata)
+        self.tableView_PanelMetadata.setObjectName("tableView_PanelMetadata")
+        self.verticalLayout_6.addWidget(self.tableView_PanelMetadata)
+        self.tabWidget_Main.addTab(self.tab_PanelMetadata, "")
         self.verticalLayout.addWidget(self.tabWidget_Main)
         MainWindow.setCentralWidget(self.centralwidget)
         self.menubar = QtWidgets.QMenuBar(MainWindow)
-        self.menubar.setGeometry(QtCore.QRect(0, 0, 992, 22))
+        self.menubar.setGeometry(QtCore.QRect(0, 0, 1277, 22))
         self.menubar.setObjectName("menubar")
-        self.menuOptions = QtWidgets.QMenu(self.menubar)
-        self.menuOptions.setObjectName("menuOptions")
+        self.menuFile = QtWidgets.QMenu(self.menubar)
+        self.menuFile.setObjectName("menuFile")
+        self.menuExport = QtWidgets.QMenu(self.menuFile)
+        self.menuExport.setObjectName("menuExport")
+        self.menuHelp = QtWidgets.QMenu(self.menubar)
+        self.menuHelp.setObjectName("menuHelp")
         MainWindow.setMenuBar(self.menubar)
         self.statusbar = QtWidgets.QStatusBar(MainWindow)
         self.statusbar.setObjectName("statusbar")
         MainWindow.setStatusBar(self.statusbar)
-        self.actionSave_current_GUI_parameters_json = QtGui.QAction(MainWindow)
-        self.actionSave_current_GUI_parameters_json.setObjectName("actionSave_current_GUI_parameters_json")
-        self.actionLoad_GUI_parameters_json = QtGui.QAction(MainWindow)
-        self.actionLoad_GUI_parameters_json.setObjectName("actionLoad_GUI_parameters_json")
-        self.actionLoad_default_parameters = QtGui.QAction(MainWindow)
-        self.actionLoad_default_parameters.setObjectName("actionLoad_default_parameters")
-        self.menuOptions.addAction(self.actionSave_current_GUI_parameters_json)
-        self.menuOptions.addAction(self.actionLoad_GUI_parameters_json)
-        self.menuOptions.addAction(self.actionLoad_default_parameters)
-        self.menubar.addAction(self.menuOptions.menuAction())
+        self.actionLoad_xlsm_file = QtGui.QAction(MainWindow)
+        self.actionLoad_xlsm_file.setObjectName("actionLoad_xlsm_file")
+        self.action_About = QtGui.QAction(MainWindow)
+        self.action_About.setObjectName("action_About")
+        self.action_csvFiles = QtGui.QAction(MainWindow)
+        self.action_csvFiles.setObjectName("action_csvFiles")
+        self.action_Exit = QtGui.QAction(MainWindow)
+        self.action_Exit.setObjectName("action_Exit")
+        self.menuExport.addAction(self.action_csvFiles)
+        self.menuFile.addAction(self.actionLoad_xlsm_file)
+        self.menuFile.addAction(self.menuExport.menuAction())
+        self.menuFile.addSeparator()
+        self.menuFile.addAction(self.action_Exit)
+        self.menuHelp.addAction(self.action_About)
+        self.menubar.addAction(self.menuFile.menuAction())
+        self.menubar.addAction(self.menuHelp.menuAction())
 
         self.retranslateUi(MainWindow)
         self.tabWidget_Main.setCurrentIndex(0)
+        self.tabWidget_LSData.setCurrentIndex(0)
         QtCore.QMetaObject.connectSlotsByName(MainWindow)
 
     def retranslateUi(self, MainWindow):
         _translate = QtCore.QCoreApplication.translate
-        MainWindow.setWindowTitle(_translate("MainWindow", "lifescale tools"))
-        self.groupBox_data.setTitle(_translate("MainWindow", "Data"))
-        self.label_data_rawData.setText(_translate("MainWindow", "Raw data folder"))
-        self.pushButton_data_rawData.setText(_translate("MainWindow", "Browse"))
-        self.label_data_metadataFile.setText(_translate("MainWindow", "Metadata file (optional)"))
-        self.pushButton_data_metadataFile.setText(_translate("MainWindow", "Browse"))
-        self.label_data_outputFolder.setText(_translate("MainWindow", "Output folder"))
-        self.pushButton_data_outputFolder.setText(_translate("MainWindow", "Browse"))
-        self.label_data_selectExperiment.setText(_translate("MainWindow", "Select Experiment"))
-        self.groupBox_processingParameters.setTitle(_translate("MainWindow", "Processing parameters"))
-        self.label_massTransformation.setText(_translate("MainWindow", "Mass transformation [fg/Hz]"))
-        self.label_massCutoff.setText(_translate("MainWindow", "Mass cutoff [fg]"))
-        self.label_peakWidthCutoff.setText(_translate("MainWindow", "Peak width cutoff [???]"))
-        self.label_peakDistanceCutoff.setText(_translate("MainWindow", "Peak distance cutoff [??]"))
-        self.pushButton_run.setText(_translate("MainWindow", "Run"))
-        self.tabWidget_Main.setTabText(self.tabWidget_Main.indexOf(self.tab_peaks), _translate("MainWindow", "Mass Peaks"))
-        self.tabWidget_Main.setTabText(self.tabWidget_Main.indexOf(self.tab_analysis), _translate("MainWindow", "Analysis"))
-        self.menuOptions.setTitle(_translate("MainWindow", "Options"))
-        self.actionSave_current_GUI_parameters_json.setText(_translate("MainWindow", "Save current GUI parameters (json)"))
-        self.actionLoad_GUI_parameters_json.setText(_translate("MainWindow", "Load GUI parameters (json)"))
-        self.actionLoad_default_parameters.setText(_translate("MainWindow", "Load default parameters"))
+        MainWindow.setWindowTitle(_translate("MainWindow", "LifeScale utils"))
+        self.groupBox_LSDataOptions.setTitle(_translate("MainWindow", "Options"))
+        self.pushButton_resetMassLimits.setText(_translate("MainWindow", "Reset mass limits"))
+        self.checkBox_MassesShowTable.setText(_translate("MainWindow", "Show table"))
+        self.groupBoxLSDataSampleStatistics.setTitle(_translate("MainWindow", "Sample statistics (current selection)"))
+        self.label.setText(_translate("MainWindow", "Selected masses"))
+        self.label_3.setText(_translate("MainWindow", "Selection limits"))
+        self.label_5.setText(_translate("MainWindow", "Mean"))
+        self.label_7.setText(_translate("MainWindow", "Median"))
+        self.label_9.setText(_translate("MainWindow", "Std"))
+        self.label_11.setText(_translate("MainWindow", "IQR"))
+        self.label_13.setText(_translate("MainWindow", "rCV"))
+        self.groupBox_histOptions.setTitle(_translate("MainWindow", "Histogram options"))
+        self.label_2.setText(_translate("MainWindow", "Bin determination method"))
+        self.label_numberOfBins.setText(_translate("MainWindow", "Number of bins"))
+        self.checkBox_plotMedian.setText(_translate("MainWindow", "Plot median"))
+        self.checkBox_plotMean.setText(_translate("MainWindow", "Plot mean"))
+        self.tabWidget_LSData.setTabText(self.tabWidget_LSData.indexOf(self.tab_LSData_hist), _translate("MainWindow", "Sample histogram and statistics"))
+        self.tabWidget_LSData.setTabText(self.tabWidget_LSData.indexOf(self.tab_Masses), _translate("MainWindow", "Masses per Sample"))
+        self.tabWidget_Main.setTabText(self.tabWidget_Main.indexOf(self.tab_LSData), _translate("MainWindow", "Masses"))
+        self.tabWidget_Main.setTabText(self.tabWidget_Main.indexOf(self.tab_SampleSummary), _translate("MainWindow", "Sample Summary"))
+        self.tabWidget_Main.setTabText(self.tabWidget_Main.indexOf(self.tab_PanelMetadata), _translate("MainWindow", "Panel Metadata"))
+        self.menuFile.setTitle(_translate("MainWindow", "File"))
+        self.menuExport.setTitle(_translate("MainWindow", "Export"))
+        self.menuHelp.setTitle(_translate("MainWindow", "Help"))
+        self.actionLoad_xlsm_file.setText(_translate("MainWindow", "Load xlsm file"))
+        self.actionLoad_xlsm_file.setToolTip(_translate("MainWindow", "Load xlsm file created by LifeScale"))
+        self.action_About.setText(_translate("MainWindow", "About"))
+        self.action_csvFiles.setText(_translate("MainWindow", "CSV files"))
+        self.action_Exit.setText(_translate("MainWindow", "Exit"))
+from pyqtgraph import GraphicsLayoutWidget
diff --git a/lifescale/gui/MainWindow.ui b/lifescale/gui/MainWindow.ui
index 8b01b72c078c0c7b11c1ad10d6185da8c5a62ca0..3adb2eb1ff3edafed1f22d81969f576d0bae7fb4 100644
--- a/lifescale/gui/MainWindow.ui
+++ b/lifescale/gui/MainWindow.ui
@@ -6,185 +6,367 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>992</width>
-    <height>616</height>
+    <width>1277</width>
+    <height>728</height>
    </rect>
   </property>
   <property name="windowTitle">
-   <string>lifescale tools</string>
+   <string>LifeScale utils</string>
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QVBoxLayout" name="verticalLayout">
     <item>
      <widget class="QTabWidget" name="tabWidget_Main">
+      <property name="tabPosition">
+       <enum>QTabWidget::East</enum>
+      </property>
       <property name="currentIndex">
        <number>0</number>
       </property>
-      <widget class="QWidget" name="tab_peaks">
+      <widget class="QWidget" name="tab_LSData">
        <attribute name="title">
-        <string>Mass Peaks</string>
+        <string>Masses</string>
        </attribute>
-       <layout class="QVBoxLayout" name="verticalLayout_2">
+       <layout class="QVBoxLayout" name="verticalLayout_4">
         <item>
-         <widget class="QGroupBox" name="groupBox_data">
-          <property name="title">
-           <string>Data</string>
+         <widget class="QSplitter" name="splitter">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
+          </property>
+          <property name="childrenCollapsible">
+           <bool>false</bool>
           </property>
-          <layout class="QFormLayout" name="formLayout">
-           <item row="0" column="0">
-            <widget class="QLabel" name="label_data_rawData">
-             <property name="text">
-              <string>Raw data folder</string>
-             </property>
-            </widget>
-           </item>
-           <item row="0" column="1">
-            <layout class="QHBoxLayout" name="horizontalLayout_data_rawData">
+          <widget class="QWidget" name="layoutWidget">
+           <layout class="QVBoxLayout" name="verticalLayout_2">
+            <property name="sizeConstraint">
+             <enum>QLayout::SetDefaultConstraint</enum>
+            </property>
+            <item>
+             <widget class="QListWidget" name="listWidget_Samples">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="MinimumExpanding" vsizetype="Expanding">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+              <property name="minimumSize">
+               <size>
+                <width>150</width>
+                <height>0</height>
+               </size>
+              </property>
+              <property name="maximumSize">
+               <size>
+                <width>16777215</width>
+                <height>16777215</height>
+               </size>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QGroupBox" name="groupBox_LSDataOptions">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="MinimumExpanding" vsizetype="Preferred">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+              <property name="minimumSize">
+               <size>
+                <width>150</width>
+                <height>0</height>
+               </size>
+              </property>
+              <property name="maximumSize">
+               <size>
+                <width>16777215</width>
+                <height>16777215</height>
+               </size>
+              </property>
+              <property name="title">
+               <string>Options</string>
+              </property>
+              <layout class="QVBoxLayout" name="verticalLayout_8">
+               <item>
+                <widget class="QPushButton" name="pushButton_resetMassLimits">
+                 <property name="text">
+                  <string>Reset mass limits</string>
+                 </property>
+                </widget>
+               </item>
+               <item>
+                <widget class="QCheckBox" name="checkBox_MassesShowTable">
+                 <property name="text">
+                  <string>Show table</string>
+                 </property>
+                 <property name="checked">
+                  <bool>true</bool>
+                 </property>
+                </widget>
+               </item>
+              </layout>
+             </widget>
+            </item>
+           </layout>
+          </widget>
+          <widget class="QTabWidget" name="tabWidget_LSData">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+             <horstretch>1</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="currentIndex">
+            <number>0</number>
+           </property>
+           <widget class="QWidget" name="tab_LSData_hist">
+            <attribute name="title">
+             <string>Sample histogram and statistics</string>
+            </attribute>
+            <layout class="QVBoxLayout" name="verticalLayout_9">
              <item>
-              <widget class="QLineEdit" name="lineEdit_data_rawData"/>
+              <widget class="GraphicsLayoutWidget" name="GraphicsLayoutWidget_SampelHistogram"/>
              </item>
              <item>
-              <widget class="QPushButton" name="pushButton_data_rawData">
-               <property name="text">
-                <string>Browse</string>
-               </property>
-              </widget>
+              <layout class="QHBoxLayout" name="horizontalLayout_2">
+               <item>
+                <widget class="QGroupBox" name="groupBoxLSDataSampleStatistics">
+                 <property name="title">
+                  <string>Sample statistics (current selection)</string>
+                 </property>
+                 <layout class="QHBoxLayout" name="horizontalLayout">
+                  <item>
+                   <layout class="QFormLayout" name="formLayout">
+                    <item row="0" column="0">
+                     <widget class="QLabel" name="label">
+                      <property name="text">
+                       <string>Selected masses</string>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="0" column="1">
+                     <widget class="QLabel" name="label_SelectedMasse">
+                      <property name="text">
+                       <string/>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="1" column="0">
+                     <widget class="QLabel" name="label_3">
+                      <property name="text">
+                       <string>Selection limits</string>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="1" column="1">
+                     <widget class="QLabel" name="label_selectionLimits">
+                      <property name="text">
+                       <string/>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="2" column="0">
+                     <widget class="QLabel" name="label_5">
+                      <property name="text">
+                       <string>Mean</string>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="2" column="1">
+                     <widget class="QLabel" name="label_mean">
+                      <property name="text">
+                       <string/>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="3" column="0">
+                     <widget class="QLabel" name="label_7">
+                      <property name="text">
+                       <string>Median</string>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="3" column="1">
+                     <widget class="QLabel" name="label_median">
+                      <property name="text">
+                       <string/>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="4" column="0">
+                     <widget class="QLabel" name="label_9">
+                      <property name="text">
+                       <string>Std</string>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="4" column="1">
+                     <widget class="QLabel" name="label_std">
+                      <property name="text">
+                       <string/>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="5" column="0">
+                     <widget class="QLabel" name="label_11">
+                      <property name="text">
+                       <string>IQR</string>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="5" column="1">
+                     <widget class="QLabel" name="label_iqr">
+                      <property name="text">
+                       <string/>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="6" column="0">
+                     <widget class="QLabel" name="label_13">
+                      <property name="text">
+                       <string>rCV</string>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="6" column="1">
+                     <widget class="QLabel" name="label_rcv">
+                      <property name="text">
+                       <string/>
+                      </property>
+                     </widget>
+                    </item>
+                   </layout>
+                  </item>
+                 </layout>
+                </widget>
+               </item>
+               <item>
+                <widget class="QGroupBox" name="groupBox_histOptions">
+                 <property name="title">
+                  <string>Histogram options</string>
+                 </property>
+                 <layout class="QVBoxLayout" name="verticalLayout_3">
+                  <item>
+                   <layout class="QFormLayout" name="formLayout_2">
+                    <item row="0" column="0">
+                     <widget class="QLabel" name="label_2">
+                      <property name="text">
+                       <string>Bin determination method</string>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="0" column="1">
+                     <widget class="QComboBox" name="comboBox_histMethod"/>
+                    </item>
+                    <item row="1" column="0">
+                     <widget class="QLabel" name="label_numberOfBins">
+                      <property name="text">
+                       <string>Number of bins</string>
+                      </property>
+                     </widget>
+                    </item>
+                    <item row="1" column="1">
+                     <widget class="QSpinBox" name="spinBox_histBins">
+                      <property name="maximum">
+                       <number>1000</number>
+                      </property>
+                      <property name="stepType">
+                       <enum>QAbstractSpinBox::AdaptiveDecimalStepType</enum>
+                      </property>
+                      <property name="value">
+                       <number>100</number>
+                      </property>
+                     </widget>
+                    </item>
+                   </layout>
+                  </item>
+                  <item>
+                   <widget class="QLabel" name="label_histBinMethodDescription">
+                    <property name="text">
+                     <string/>
+                    </property>
+                    <property name="wordWrap">
+                     <bool>true</bool>
+                    </property>
+                   </widget>
+                  </item>
+                  <item>
+                   <widget class="QCheckBox" name="checkBox_plotMedian">
+                    <property name="text">
+                     <string>Plot median</string>
+                    </property>
+                    <property name="checked">
+                     <bool>false</bool>
+                    </property>
+                   </widget>
+                  </item>
+                  <item>
+                   <widget class="QCheckBox" name="checkBox_plotMean">
+                    <property name="text">
+                     <string>Plot mean</string>
+                    </property>
+                    <property name="checked">
+                     <bool>false</bool>
+                    </property>
+                   </widget>
+                  </item>
+                 </layout>
+                </widget>
+               </item>
+              </layout>
              </item>
             </layout>
-           </item>
-           <item row="1" column="0">
-            <widget class="QLabel" name="label_data_metadataFile">
-             <property name="text">
-              <string>Metadata file (optional)</string>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="1">
-            <layout class="QHBoxLayout" name="horizontalLayout_data_metadataFile">
+           </widget>
+           <widget class="QWidget" name="tab_Masses">
+            <attribute name="title">
+             <string>Masses per Sample</string>
+            </attribute>
+            <layout class="QVBoxLayout" name="verticalLayout_5">
              <item>
-              <widget class="QLineEdit" name="lineEdit_data_metadataFile"/>
-             </item>
-             <item>
-              <widget class="QPushButton" name="pushButton_data_metadataFile">
-               <property name="text">
-                <string>Browse</string>
+              <widget class="QTableView" name="tableView_Masses">
+               <property name="enabled">
+                <bool>true</bool>
                </property>
-              </widget>
-             </item>
-            </layout>
-           </item>
-           <item row="2" column="0">
-            <widget class="QLabel" name="label_data_outputFolder">
-             <property name="text">
-              <string>Output folder</string>
-             </property>
-            </widget>
-           </item>
-           <item row="2" column="1">
-            <layout class="QHBoxLayout" name="horizontalLayout_data_outputFolder">
-             <item>
-              <widget class="QLineEdit" name="lineEdit_data_outputFolder"/>
-             </item>
-             <item>
-              <widget class="QPushButton" name="pushButton_data_outputFolder">
-               <property name="text">
-                <string>Browse</string>
+               <property name="lineWidth">
+                <number>9</number>
+               </property>
+               <property name="sizeAdjustPolicy">
+                <enum>QAbstractScrollArea::AdjustToContents</enum>
                </property>
               </widget>
              </item>
             </layout>
-           </item>
-           <item row="3" column="0">
-            <widget class="QLabel" name="label_data_selectExperiment">
-             <property name="text">
-              <string>Select Experiment</string>
-             </property>
-            </widget>
-           </item>
-           <item row="3" column="1">
-            <widget class="QComboBox" name="comboBox_data_selectExperiment"/>
-           </item>
-          </layout>
-         </widget>
-        </item>
-        <item>
-         <widget class="QGroupBox" name="groupBox_processingParameters">
-          <property name="title">
-           <string>Processing parameters</string>
-          </property>
-          <layout class="QFormLayout" name="formLayout_2">
-           <item row="0" column="0">
-            <widget class="QLabel" name="label_massTransformation">
-             <property name="text">
-              <string>Mass transformation [fg/Hz]</string>
-             </property>
-            </widget>
-           </item>
-           <item row="0" column="1">
-            <widget class="QDoubleSpinBox" name="doubleSpinBox_massTransformation">
-             <property name="decimals">
-              <number>6</number>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="0">
-            <widget class="QLabel" name="label_massCutoff">
-             <property name="text">
-              <string>Mass cutoff [fg]</string>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="1">
-            <widget class="QDoubleSpinBox" name="doubleSpinBox_massCutoff">
-             <property name="decimals">
-              <number>1</number>
-             </property>
-            </widget>
-           </item>
-           <item row="2" column="0">
-            <widget class="QLabel" name="label_peakWidthCutoff">
-             <property name="text">
-              <string>Peak width cutoff [???]</string>
-             </property>
-            </widget>
-           </item>
-           <item row="2" column="1">
-            <widget class="QDoubleSpinBox" name="doubleSpinBox_peakWidthCutoff">
-             <property name="decimals">
-              <number>1</number>
-             </property>
-            </widget>
-           </item>
-           <item row="3" column="0">
-            <widget class="QLabel" name="label_peakDistanceCutoff">
-             <property name="text">
-              <string>Peak distance cutoff [??]</string>
-             </property>
-            </widget>
-           </item>
-           <item row="3" column="1">
-            <widget class="QDoubleSpinBox" name="doubleSpinBox_peakDistanceCutoff">
-             <property name="decimals">
-              <number>1</number>
-             </property>
-            </widget>
-           </item>
-          </layout>
+           </widget>
+          </widget>
          </widget>
         </item>
+       </layout>
+      </widget>
+      <widget class="QWidget" name="tab_SampleSummary">
+       <attribute name="title">
+        <string>Sample Summary</string>
+       </attribute>
+       <layout class="QVBoxLayout" name="verticalLayout_7">
         <item>
-         <widget class="QPushButton" name="pushButton_run">
-          <property name="text">
-           <string>Run</string>
-          </property>
-         </widget>
+         <widget class="QTableView" name="tableView_SampleSummary"/>
         </item>
        </layout>
       </widget>
-      <widget class="QWidget" name="tab_analysis">
+      <widget class="QWidget" name="tab_PanelMetadata">
        <attribute name="title">
-        <string>Analysis</string>
+        <string>Panel Metadata</string>
        </attribute>
+       <layout class="QVBoxLayout" name="verticalLayout_6">
+        <item>
+         <widget class="QTableView" name="tableView_PanelMetadata"/>
+        </item>
+       </layout>
       </widget>
      </widget>
     </item>
@@ -195,37 +377,66 @@
     <rect>
      <x>0</x>
      <y>0</y>
-     <width>992</width>
+     <width>1277</width>
      <height>22</height>
     </rect>
    </property>
-   <widget class="QMenu" name="menuOptions">
+   <widget class="QMenu" name="menuFile">
+    <property name="title">
+     <string>File</string>
+    </property>
+    <widget class="QMenu" name="menuExport">
+     <property name="title">
+      <string>Export</string>
+     </property>
+     <addaction name="action_csvFiles"/>
+    </widget>
+    <addaction name="actionLoad_xlsm_file"/>
+    <addaction name="menuExport"/>
+    <addaction name="separator"/>
+    <addaction name="action_Exit"/>
+   </widget>
+   <widget class="QMenu" name="menuHelp">
     <property name="title">
-     <string>Options</string>
+     <string>Help</string>
     </property>
-    <addaction name="actionSave_current_GUI_parameters_json"/>
-    <addaction name="actionLoad_GUI_parameters_json"/>
-    <addaction name="actionLoad_default_parameters"/>
+    <addaction name="action_About"/>
    </widget>
-   <addaction name="menuOptions"/>
+   <addaction name="menuFile"/>
+   <addaction name="menuHelp"/>
   </widget>
   <widget class="QStatusBar" name="statusbar"/>
-  <action name="actionSave_current_GUI_parameters_json">
+  <action name="actionLoad_xlsm_file">
+   <property name="text">
+    <string>Load xlsm file</string>
+   </property>
+   <property name="toolTip">
+    <string>Load xlsm file created by LifeScale</string>
+   </property>
+  </action>
+  <action name="action_About">
    <property name="text">
-    <string>Save current GUI parameters (json)</string>
+    <string>About</string>
    </property>
   </action>
-  <action name="actionLoad_GUI_parameters_json">
+  <action name="action_csvFiles">
    <property name="text">
-    <string>Load GUI parameters (json)</string>
+    <string>CSV files</string>
    </property>
   </action>
-  <action name="actionLoad_default_parameters">
+  <action name="action_Exit">
    <property name="text">
-    <string>Load default parameters</string>
+    <string>Exit</string>
    </property>
   </action>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>GraphicsLayoutWidget</class>
+   <extends>QGraphicsView</extends>
+   <header>pyqtgraph</header>
+  </customwidget>
+ </customwidgets>
  <resources/>
  <connections/>
 </ui>
diff --git a/lifescale/gui/__init__.py b/lifescale/gui/__init__.py
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..b8ecf4c4880b775e0569d6e408d78df27aa22c5c 100644
--- a/lifescale/gui/__init__.py
+++ b/lifescale/gui/__init__.py
@@ -0,0 +1,18 @@
+"""LifeScale utils graphical user interface.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+:Authors:
+    Andreas Hellerschmied (heller182@gmx.at)
+"""
\ No newline at end of file
diff --git a/lifescale/gui/dialog_about.py b/lifescale/gui/dialog_about.py
new file mode 100644
index 0000000000000000000000000000000000000000..80f4d79b293093d4fb26cf60efd407b0955f31ec
--- /dev/null
+++ b/lifescale/gui/dialog_about.py
@@ -0,0 +1,753 @@
+# Form implementation generated from reading ui file 'lifescale/gui/dialog_about.ui'
+#
+# Created by: PyQt6 UI code generator 6.4.0
+#
+# WARNING: Any manual changes made to this file will be lost when pyuic6 is
+# run again.  Do not edit this file unless you know what you are doing.
+
+
+from PyQt6 import QtCore, QtGui, QtWidgets
+
+
+class Ui_Dialog_about(object):
+    def setupUi(self, Dialog_about):
+        Dialog_about.setObjectName("Dialog_about")
+        Dialog_about.resize(610, 677)
+        Dialog_about.setMinimumSize(QtCore.QSize(610, 500))
+        self.verticalLayout_3 = QtWidgets.QVBoxLayout(Dialog_about)
+        self.verticalLayout_3.setObjectName("verticalLayout_3")
+        self.label_2 = QtWidgets.QLabel(Dialog_about)
+        font = QtGui.QFont()
+        font.setPointSize(12)
+        font.setBold(True)
+        font.setWeight(75)
+        self.label_2.setFont(font)
+        self.label_2.setTextFormat(QtCore.Qt.TextFormat.AutoText)
+        self.label_2.setWordWrap(True)
+        self.label_2.setObjectName("label_2")
+        self.verticalLayout_3.addWidget(self.label_2)
+        self.formLayout = QtWidgets.QFormLayout()
+        self.formLayout.setObjectName("formLayout")
+        self.label_8 = QtWidgets.QLabel(Dialog_about)
+        self.label_8.setObjectName("label_8")
+        self.formLayout.setWidget(0, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_8)
+        self.label_version = QtWidgets.QLabel(Dialog_about)
+        self.label_version.setObjectName("label_version")
+        self.formLayout.setWidget(0, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_version)
+        self.label_6 = QtWidgets.QLabel(Dialog_about)
+        self.label_6.setObjectName("label_6")
+        self.formLayout.setWidget(1, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_6)
+        self.label_email = QtWidgets.QLabel(Dialog_about)
+        self.label_email.setObjectName("label_email")
+        self.formLayout.setWidget(1, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_email)
+        self.label_7 = QtWidgets.QLabel(Dialog_about)
+        self.label_7.setObjectName("label_7")
+        self.formLayout.setWidget(3, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_7)
+        self.label_copyright = QtWidgets.QLabel(Dialog_about)
+        self.label_copyright.setObjectName("label_copyright")
+        self.formLayout.setWidget(3, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_copyright)
+        self.label_9 = QtWidgets.QLabel(Dialog_about)
+        self.label_9.setObjectName("label_9")
+        self.formLayout.setWidget(4, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_9)
+        self.label_git_repo = QtWidgets.QLabel(Dialog_about)
+        self.label_git_repo.setOpenExternalLinks(True)
+        self.label_git_repo.setObjectName("label_git_repo")
+        self.formLayout.setWidget(4, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_git_repo)
+        self.label_5 = QtWidgets.QLabel(Dialog_about)
+        self.label_5.setObjectName("label_5")
+        self.formLayout.setWidget(5, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_5)
+        self.label_pypi_repo = QtWidgets.QLabel(Dialog_about)
+        self.label_pypi_repo.setObjectName("label_pypi_repo")
+        self.formLayout.setWidget(5, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_pypi_repo)
+        self.label_10 = QtWidgets.QLabel(Dialog_about)
+        self.label_10.setObjectName("label_10")
+        self.formLayout.setWidget(2, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_10)
+        self.label_author = QtWidgets.QLabel(Dialog_about)
+        self.label_author.setObjectName("label_author")
+        self.formLayout.setWidget(2, QtWidgets.QFormLayout.ItemRole.FieldRole, self.label_author)
+        self.verticalLayout_3.addLayout(self.formLayout)
+        spacerItem = QtWidgets.QSpacerItem(20, 10, QtWidgets.QSizePolicy.Policy.Minimum, QtWidgets.QSizePolicy.Policy.Fixed)
+        self.verticalLayout_3.addItem(spacerItem)
+        self.horizontalLayout = QtWidgets.QHBoxLayout()
+        self.horizontalLayout.setObjectName("horizontalLayout")
+        self.label_4 = QtWidgets.QLabel(Dialog_about)
+        self.label_4.setWordWrap(True)
+        self.label_4.setOpenExternalLinks(True)
+        self.label_4.setObjectName("label_4")
+        self.horizontalLayout.addWidget(self.label_4)
+        self.label = QtWidgets.QLabel(Dialog_about)
+        self.label.setText("")
+        self.label.setPixmap(QtGui.QPixmap(":/logos/logos/Uni_Logo_2016_SW_230px-wide.jpg"))
+        self.label.setScaledContents(False)
+        self.label.setObjectName("label")
+        self.horizontalLayout.addWidget(self.label)
+        self.verticalLayout_3.addLayout(self.horizontalLayout)
+        spacerItem1 = QtWidgets.QSpacerItem(20, 10, QtWidgets.QSizePolicy.Policy.Minimum, QtWidgets.QSizePolicy.Policy.Fixed)
+        self.verticalLayout_3.addItem(spacerItem1)
+        self.groupBox = QtWidgets.QGroupBox(Dialog_about)
+        self.groupBox.setObjectName("groupBox")
+        self.verticalLayout_2 = QtWidgets.QVBoxLayout(self.groupBox)
+        self.verticalLayout_2.setObjectName("verticalLayout_2")
+        self.verticalLayout = QtWidgets.QVBoxLayout()
+        self.verticalLayout.setObjectName("verticalLayout")
+        self.label_3 = QtWidgets.QLabel(self.groupBox)
+        self.label_3.setOpenExternalLinks(True)
+        self.label_3.setObjectName("label_3")
+        self.verticalLayout.addWidget(self.label_3)
+        self.plainTextEdit = QtWidgets.QPlainTextEdit(self.groupBox)
+        font = QtGui.QFont()
+        font.setPointSize(10)
+        self.plainTextEdit.setFont(font)
+        self.plainTextEdit.setObjectName("plainTextEdit")
+        self.verticalLayout.addWidget(self.plainTextEdit)
+        self.verticalLayout_2.addLayout(self.verticalLayout)
+        self.verticalLayout_3.addWidget(self.groupBox)
+        self.buttonBox = QtWidgets.QDialogButtonBox(Dialog_about)
+        self.buttonBox.setOrientation(QtCore.Qt.Orientation.Horizontal)
+        self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.StandardButton.Close)
+        self.buttonBox.setObjectName("buttonBox")
+        self.verticalLayout_3.addWidget(self.buttonBox)
+
+        self.retranslateUi(Dialog_about)
+        self.buttonBox.accepted.connect(Dialog_about.accept) # type: ignore
+        self.buttonBox.rejected.connect(Dialog_about.reject) # type: ignore
+        QtCore.QMetaObject.connectSlotsByName(Dialog_about)
+
+    def retranslateUi(self, Dialog_about):
+        _translate = QtCore.QCoreApplication.translate
+        Dialog_about.setWindowTitle(_translate("Dialog_about", "About"))
+        self.label_2.setText(_translate("Dialog_about", "LifeScale utils"))
+        self.label_8.setText(_translate("Dialog_about", "Version:"))
+        self.label_version.setText(_translate("Dialog_about", "version"))
+        self.label_6.setText(_translate("Dialog_about", "Contact:"))
+        self.label_email.setText(_translate("Dialog_about", "email"))
+        self.label_7.setText(_translate("Dialog_about", "Copyright:"))
+        self.label_copyright.setText(_translate("Dialog_about", "copyright"))
+        self.label_9.setText(_translate("Dialog_about", "Git repository:"))
+        self.label_git_repo.setText(_translate("Dialog_about", "git_repo"))
+        self.label_5.setText(_translate("Dialog_about", "pypi.org repository:"))
+        self.label_pypi_repo.setText(_translate("Dialog_about", "pypi_repo"))
+        self.label_10.setText(_translate("Dialog_about", "Author:"))
+        self.label_author.setText(_translate("Dialog_about", "author"))
+        self.label_4.setText(_translate("Dialog_about", "<html><head/><body><p>LifeScale utils was funded by the <a href=\"https://cmess.univie.ac.at/\"><span style=\" text-decoration: underline; color:#0000ff;\">Centre for Microbiology and Environmental Systems Science (CMESS) of the University of Vienna</span></a>.</p></body></html>"))
+        self.groupBox.setTitle(_translate("Dialog_about", "License"))
+        self.label_3.setText(_translate("Dialog_about", "<html><head/><body><p>LifeScale utils is licensed under the <a href=\"https://www.gnu.org/licenses/gpl-3.0.de.html\"><span style=\" text-decoration: underline; color:#0000ff;\">GNU General Public License 3</span></a>.</p></body></html>"))
+        self.plainTextEdit.setPlainText(_translate("Dialog_about", " GNU GENERAL PUBLIC LICENSE\n"
+"                       Version 3, 29 June 2007\n"
+"\n"
+" Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>\n"
+" Everyone is permitted to copy and distribute verbatim copies\n"
+" of this license document, but changing it is not allowed.\n"
+"\n"
+"                            Preamble\n"
+"\n"
+"  The GNU General Public License is a free, copyleft license for\n"
+"software and other kinds of works.\n"
+"\n"
+"  The licenses for most software and other practical works are designed\n"
+"to take away your freedom to share and change the works.  By contrast,\n"
+"the GNU General Public License is intended to guarantee your freedom to\n"
+"share and change all versions of a program--to make sure it remains free\n"
+"software for all its users.  We, the Free Software Foundation, use the\n"
+"GNU General Public License for most of our software; it applies also to\n"
+"any other work released this way by its authors.  You can apply it to\n"
+"your programs, too.\n"
+"\n"
+"  When we speak of free software, we are referring to freedom, not\n"
+"price.  Our General Public Licenses are designed to make sure that you\n"
+"have the freedom to distribute copies of free software (and charge for\n"
+"them if you wish), that you receive source code or can get it if you\n"
+"want it, that you can change the software or use pieces of it in new\n"
+"free programs, and that you know you can do these things.\n"
+"\n"
+"  To protect your rights, we need to prevent others from denying you\n"
+"these rights or asking you to surrender the rights.  Therefore, you have\n"
+"certain responsibilities if you distribute copies of the software, or if\n"
+"you modify it: responsibilities to respect the freedom of others.\n"
+"\n"
+"  For example, if you distribute copies of such a program, whether\n"
+"gratis or for a fee, you must pass on to the recipients the same\n"
+"freedoms that you received.  You must make sure that they, too, receive\n"
+"or can get the source code.  And you must show them these terms so they\n"
+"know their rights.\n"
+"\n"
+"  Developers that use the GNU GPL protect your rights with two steps:\n"
+"(1) assert copyright on the software, and (2) offer you this License\n"
+"giving you legal permission to copy, distribute and/or modify it.\n"
+"\n"
+"  For the developers\' and authors\' protection, the GPL clearly explains\n"
+"that there is no warranty for this free software.  For both users\' and\n"
+"authors\' sake, the GPL requires that modified versions be marked as\n"
+"changed, so that their problems will not be attributed erroneously to\n"
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+"  Some devices are designed to deny users access to install or run\n"
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+"  Finally, every program is threatened constantly by software patents.\n"
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+"\n"
+"  The precise terms and conditions for copying, distribution and\n"
+"modification follow.\n"
+"\n"
+"                       TERMS AND CONDITIONS\n"
+"\n"
+"  0. Definitions.\n"
+"\n"
+"  \"This License\" refers to version 3 of the GNU General Public License.\n"
+"\n"
+"  \"Copyright\" also means copyright-like laws that apply to other kinds of\n"
+"works, such as semiconductor masks.\n"
+"\n"
+"  \"The Program\" refers to any copyrightable work licensed under this\n"
+"License.  Each licensee is addressed as \"you\".  \"Licensees\" and\n"
+"\"recipients\" may be individuals or organizations.\n"
+"\n"
+"  To \"modify\" a work means to copy from or adapt all or part of the work\n"
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+"  A \"covered work\" means either the unmodified Program or a work based\n"
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+"  To \"propagate\" a work means to do anything with it that, without\n"
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+"  An interactive user interface displays \"Appropriate Legal Notices\"\n"
+"to the extent that it includes a convenient and prominently visible\n"
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+"  No covered work shall be deemed part of an effective technological\n"
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+"11 of the WIPO copyright treaty adopted on 20 December 1996, or\n"
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+"circumvention of technological measures to the extent such circumvention\n"
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+"modification of the work as a means of enforcing, against the work\'s\n"
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+"recipients a copy of this License along with the Program.\n"
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+"  You may charge any price or no price for each copy that you convey,\n"
+"and you may offer support or warranty protection for a fee.\n"
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+"  You may convey a work based on the Program, or the modifications to\n"
+"produce it from the Program, in the form of source code under the\n"
+"terms of section 4, provided that you also meet all of these conditions:\n"
+"\n"
+"    a) The work must carry prominent notices stating that you modified\n"
+"    it, and giving a relevant date.\n"
+"\n"
+"    b) The work must carry prominent notices stating that it is\n"
+"    released under this License and any conditions added under section\n"
+"    7.  This requirement modifies the requirement in section 4 to\n"
+"    \"keep intact all notices\".\n"
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+"    License to anyone who comes into possession of a copy.  This\n"
+"    License will therefore apply, along with any applicable section 7\n"
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+"    regardless of how they are packaged.  This License gives no\n"
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+"\n"
+"    d) If the work has interactive user interfaces, each must display\n"
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+"    work need not make them do so.\n"
+"\n"
+"  A compilation of a covered work with other separate and independent\n"
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+"used to limit the access or legal rights of the compilation\'s users\n"
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+"\n"
+"  6. Conveying Non-Source Forms.\n"
+"\n"
+"  You may convey a covered work in object code form under the terms\n"
+"of sections 4 and 5, provided that you also convey the\n"
+"machine-readable Corresponding Source under the terms of this License,\n"
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+"    medium customarily used for software interchange, for a price no\n"
+"    more than your reasonable cost of physically performing this\n"
+"    conveying of source, or (2) access to copy the\n"
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+"\n"
+"    c) Convey individual copies of the object code with a copy of the\n"
+"    written offer to provide the Corresponding Source.  This\n"
+"    alternative is allowed only occasionally and noncommercially, and\n"
+"    only if you received the object code with such an offer, in accord\n"
+"    with subsection 6b.\n"
+"\n"
+"    d) Convey the object code by offering access from a designated\n"
+"    place (gratis or for a charge), and offer equivalent access to the\n"
+"    Corresponding Source in the same way through the same place at no\n"
+"    further charge.  You need not require recipients to copy the\n"
+"    Corresponding Source along with the object code.  If the place to\n"
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+"    e) Convey the object code using peer-to-peer transmission, provided\n"
+"    you inform other peers where the object code and Corresponding\n"
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+"  A separable portion of the object code, whose source code is excluded\n"
+"from the Corresponding Source as a System Library, need not be\n"
+"included in conveying the object code work.\n"
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+"  A \"User Product\" is either (1) a \"consumer product\", which means any\n"
+"tangible personal property which is normally used for personal, family,\n"
+"or household purposes, or (2) anything designed or sold for incorporation\n"
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+"is a consumer product regardless of whether the product has substantial\n"
+"commercial, industrial or non-consumer uses, unless such uses represent\n"
+"the only significant mode of use of the product.\n"
+"\n"
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+"procedures, authorization keys, or other information required to install\n"
+"and execute modified versions of a covered work in that User Product from\n"
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+"suffice to ensure that the continued functioning of the modified object\n"
+"code is in no case prevented or interfered with solely because\n"
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+"  If you convey an object code work under this section in, or with, or\n"
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+"User Product is transferred to the recipient in perpetuity or for a\n"
+"fixed term (regardless of how the transaction is characterized), the\n"
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+"by the Installation Information.  But this requirement does not apply\n"
+"if neither you nor any third party retains the ability to install\n"
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+"been installed in ROM).\n"
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+"requirement to continue to provide support service, warranty, or updates\n"
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+"network may be denied when the modification itself materially and\n"
+"adversely affects the operation of the network or violates the rules and\n"
+"protocols for communication across the network.\n"
+"\n"
+"  Corresponding Source conveyed, and Installation Information provided,\n"
+"in accord with this section must be in a format that is publicly\n"
+"documented (and with an implementation available to the public in\n"
+"source code form), and must require no special password or key for\n"
+"unpacking, reading or copying.\n"
+"\n"
+"  7. Additional Terms.\n"
+"\n"
+"  \"Additional permissions\" are terms that supplement the terms of this\n"
+"License by making exceptions from one or more of its conditions.\n"
+"Additional permissions that are applicable to the entire Program shall\n"
+"be treated as though they were included in this License, to the extent\n"
+"that they are valid under applicable law.  If additional permissions\n"
+"apply only to part of the Program, that part may be used separately\n"
+"under those permissions, but the entire Program remains governed by\n"
+"this License without regard to the additional permissions.\n"
+"\n"
+"  When you convey a copy of a covered work, you may at your option\n"
+"remove any additional permissions from that copy, or from any part of\n"
+"it.  (Additional permissions may be written to require their own\n"
+"removal in certain cases when you modify the work.)  You may place\n"
+"additional permissions on material, added by you to a covered work,\n"
+"for which you have or can give appropriate copyright permission.\n"
+"\n"
+"  Notwithstanding any other provision of this License, for material you\n"
+"add to a covered work, you may (if authorized by the copyright holders of\n"
+"that material) supplement the terms of this License with terms:\n"
+"\n"
+"    a) Disclaiming warranty or limiting liability differently from the\n"
+"    terms of sections 15 and 16 of this License; or\n"
+"\n"
+"    b) Requiring preservation of specified reasonable legal notices or\n"
+"    author attributions in that material or in the Appropriate Legal\n"
+"    Notices displayed by works containing it; or\n"
+"\n"
+"    c) Prohibiting misrepresentation of the origin of that material, or\n"
+"    requiring that modified versions of such material be marked in\n"
+"    reasonable ways as different from the original version; or\n"
+"\n"
+"    d) Limiting the use for publicity purposes of names of licensors or\n"
+"    authors of the material; or\n"
+"\n"
+"    e) Declining to grant rights under trademark law for use of some\n"
+"    trade names, trademarks, or service marks; or\n"
+"\n"
+"    f) Requiring indemnification of licensors and authors of that\n"
+"    material by anyone who conveys the material (or modified versions of\n"
+"    it) with contractual assumptions of liability to the recipient, for\n"
+"    any liability that these contractual assumptions directly impose on\n"
+"    those licensors and authors.\n"
+"\n"
+"  All other non-permissive additional terms are considered \"further\n"
+"restrictions\" within the meaning of section 10.  If the Program as you\n"
+"received it, or any part of it, contains a notice stating that it is\n"
+"governed by this License along with a term that is a further\n"
+"restriction, you may remove that term.  If a license document contains\n"
+"a further restriction but permits relicensing or conveying under this\n"
+"License, you may add to a covered work material governed by the terms\n"
+"of that license document, provided that the further restriction does\n"
+"not survive such relicensing or conveying.\n"
+"\n"
+"  If you add terms to a covered work in accord with this section, you\n"
+"must place, in the relevant source files, a statement of the\n"
+"additional terms that apply to those files, or a notice indicating\n"
+"where to find the applicable terms.\n"
+"\n"
+"  Additional terms, permissive or non-permissive, may be stated in the\n"
+"form of a separately written license, or stated as exceptions;\n"
+"the above requirements apply either way.\n"
+"\n"
+"  8. Termination.\n"
+"\n"
+"  You may not propagate or modify a covered work except as expressly\n"
+"provided under this License.  Any attempt otherwise to propagate or\n"
+"modify it is void, and will automatically terminate your rights under\n"
+"this License (including any patent licenses granted under the third\n"
+"paragraph of section 11).\n"
+"\n"
+"  However, if you cease all violation of this License, then your\n"
+"license from a particular copyright holder is reinstated (a)\n"
+"provisionally, unless and until the copyright holder explicitly and\n"
+"finally terminates your license, and (b) permanently, if the copyright\n"
+"holder fails to notify you of the violation by some reasonable means\n"
+"prior to 60 days after the cessation.\n"
+"\n"
+"  Moreover, your license from a particular copyright holder is\n"
+"reinstated permanently if the copyright holder notifies you of the\n"
+"violation by some reasonable means, this is the first time you have\n"
+"received notice of violation of this License (for any work) from that\n"
+"copyright holder, and you cure the violation prior to 30 days after\n"
+"your receipt of the notice.\n"
+"\n"
+"  Termination of your rights under this section does not terminate the\n"
+"licenses of parties who have received copies or rights from you under\n"
+"this License.  If your rights have been terminated and not permanently\n"
+"reinstated, you do not qualify to receive new licenses for the same\n"
+"material under section 10.\n"
+"\n"
+"  9. Acceptance Not Required for Having Copies.\n"
+"\n"
+"  You are not required to accept this License in order to receive or\n"
+"run a copy of the Program.  Ancillary propagation of a covered work\n"
+"occurring solely as a consequence of using peer-to-peer transmission\n"
+"to receive a copy likewise does not require acceptance.  However,\n"
+"nothing other than this License grants you permission to propagate or\n"
+"modify any covered work.  These actions infringe copyright if you do\n"
+"not accept this License.  Therefore, by modifying or propagating a\n"
+"covered work, you indicate your acceptance of this License to do so.\n"
+"\n"
+"  10. Automatic Licensing of Downstream Recipients.\n"
+"\n"
+"  Each time you convey a covered work, the recipient automatically\n"
+"receives a license from the original licensors, to run, modify and\n"
+"propagate that work, subject to this License.  You are not responsible\n"
+"for enforcing compliance by third parties with this License.\n"
+"\n"
+"  An \"entity transaction\" is a transaction transferring control of an\n"
+"organization, or substantially all assets of one, or subdividing an\n"
+"organization, or merging organizations.  If propagation of a covered\n"
+"work results from an entity transaction, each party to that\n"
+"transaction who receives a copy of the work also receives whatever\n"
+"licenses to the work the party\'s predecessor in interest had or could\n"
+"give under the previous paragraph, plus a right to possession of the\n"
+"Corresponding Source of the work from the predecessor in interest, if\n"
+"the predecessor has it or can get it with reasonable efforts.\n"
+"\n"
+"  You may not impose any further restrictions on the exercise of the\n"
+"rights granted or affirmed under this License.  For example, you may\n"
+"not impose a license fee, royalty, or other charge for exercise of\n"
+"rights granted under this License, and you may not initiate litigation\n"
+"(including a cross-claim or counterclaim in a lawsuit) alleging that\n"
+"any patent claim is infringed by making, using, selling, offering for\n"
+"sale, or importing the Program or any portion of it.\n"
+"\n"
+"  11. Patents.\n"
+"\n"
+"  A \"contributor\" is a copyright holder who authorizes use under this\n"
+"License of the Program or a work on which the Program is based.  The\n"
+"work thus licensed is called the contributor\'s \"contributor version\".\n"
+"\n"
+"  A contributor\'s \"essential patent claims\" are all patent claims\n"
+"owned or controlled by the contributor, whether already acquired or\n"
+"hereafter acquired, that would be infringed by some manner, permitted\n"
+"by this License, of making, using, or selling its contributor version,\n"
+"but do not include claims that would be infringed only as a\n"
+"consequence of further modification of the contributor version.  For\n"
+"purposes of this definition, \"control\" includes the right to grant\n"
+"patent sublicenses in a manner consistent with the requirements of\n"
+"this License.\n"
+"\n"
+"  Each contributor grants you a non-exclusive, worldwide, royalty-free\n"
+"patent license under the contributor\'s essential patent claims, to\n"
+"make, use, sell, offer for sale, import and otherwise run, modify and\n"
+"propagate the contents of its contributor version.\n"
+"\n"
+"  In the following three paragraphs, a \"patent license\" is any express\n"
+"agreement or commitment, however denominated, not to enforce a patent\n"
+"(such as an express permission to practice a patent or covenant not to\n"
+"sue for patent infringement).  To \"grant\" such a patent license to a\n"
+"party means to make such an agreement or commitment not to enforce a\n"
+"patent against the party.\n"
+"\n"
+"  If you convey a covered work, knowingly relying on a patent license,\n"
+"and the Corresponding Source of the work is not available for anyone\n"
+"to copy, free of charge and under the terms of this License, through a\n"
+"publicly available network server or other readily accessible means,\n"
+"then you must either (1) cause the Corresponding Source to be so\n"
+"available, or (2) arrange to deprive yourself of the benefit of the\n"
+"patent license for this particular work, or (3) arrange, in a manner\n"
+"consistent with the requirements of this License, to extend the patent\n"
+"license to downstream recipients.  \"Knowingly relying\" means you have\n"
+"actual knowledge that, but for the patent license, your conveying the\n"
+"covered work in a country, or your recipient\'s use of the covered work\n"
+"in a country, would infringe one or more identifiable patents in that\n"
+"country that you have reason to believe are valid.\n"
+"\n"
+"  If, pursuant to or in connection with a single transaction or\n"
+"arrangement, you convey, or propagate by procuring conveyance of, a\n"
+"covered work, and grant a patent license to some of the parties\n"
+"receiving the covered work authorizing them to use, propagate, modify\n"
+"or convey a specific copy of the covered work, then the patent license\n"
+"you grant is automatically extended to all recipients of the covered\n"
+"work and works based on it.\n"
+"\n"
+"  A patent license is \"discriminatory\" if it does not include within\n"
+"the scope of its coverage, prohibits the exercise of, or is\n"
+"conditioned on the non-exercise of one or more of the rights that are\n"
+"specifically granted under this License.  You may not convey a covered\n"
+"work if you are a party to an arrangement with a third party that is\n"
+"in the business of distributing software, under which you make payment\n"
+"to the third party based on the extent of your activity of conveying\n"
+"the work, and under which the third party grants, to any of the\n"
+"parties who would receive the covered work from you, a discriminatory\n"
+"patent license (a) in connection with copies of the covered work\n"
+"conveyed by you (or copies made from those copies), or (b) primarily\n"
+"for and in connection with specific products or compilations that\n"
+"contain the covered work, unless you entered into that arrangement,\n"
+"or that patent license was granted, prior to 28 March 2007.\n"
+"\n"
+"  Nothing in this License shall be construed as excluding or limiting\n"
+"any implied license or other defenses to infringement that may\n"
+"otherwise be available to you under applicable patent law.\n"
+"\n"
+"  12. No Surrender of Others\' Freedom.\n"
+"\n"
+"  If conditions are imposed on you (whether by court order, agreement or\n"
+"otherwise) that contradict the conditions of this License, they do not\n"
+"excuse you from the conditions of this License.  If you cannot convey a\n"
+"covered work so as to satisfy simultaneously your obligations under this\n"
+"License and any other pertinent obligations, then as a consequence you may\n"
+"not convey it at all.  For example, if you agree to terms that obligate you\n"
+"to collect a royalty for further conveying from those to whom you convey\n"
+"the Program, the only way you could satisfy both those terms and this\n"
+"License would be to refrain entirely from conveying the Program.\n"
+"\n"
+"  13. Use with the GNU Affero General Public License.\n"
+"\n"
+"  Notwithstanding any other provision of this License, you have\n"
+"permission to link or combine any covered work with a work licensed\n"
+"under version 3 of the GNU Affero General Public License into a single\n"
+"combined work, and to convey the resulting work.  The terms of this\n"
+"License will continue to apply to the part which is the covered work,\n"
+"but the special requirements of the GNU Affero General Public License,\n"
+"section 13, concerning interaction through a network will apply to the\n"
+"combination as such.\n"
+"\n"
+"  14. Revised Versions of this License.\n"
+"\n"
+"  The Free Software Foundation may publish revised and/or new versions of\n"
+"the GNU General Public License from time to time.  Such new versions will\n"
+"be similar in spirit to the present version, but may differ in detail to\n"
+"address new problems or concerns.\n"
+"\n"
+"  Each version is given a distinguishing version number.  If the\n"
+"Program specifies that a certain numbered version of the GNU General\n"
+"Public License \"or any later version\" applies to it, you have the\n"
+"option of following the terms and conditions either of that numbered\n"
+"version or of any later version published by the Free Software\n"
+"Foundation.  If the Program does not specify a version number of the\n"
+"GNU General Public License, you may choose any version ever published\n"
+"by the Free Software Foundation.\n"
+"\n"
+"  If the Program specifies that a proxy can decide which future\n"
+"versions of the GNU General Public License can be used, that proxy\'s\n"
+"public statement of acceptance of a version permanently authorizes you\n"
+"to choose that version for the Program.\n"
+"\n"
+"  Later license versions may give you additional or different\n"
+"permissions.  However, no additional obligations are imposed on any\n"
+"author or copyright holder as a result of your choosing to follow a\n"
+"later version.\n"
+"\n"
+"  15. Disclaimer of Warranty.\n"
+"\n"
+"  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY\n"
+"APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT\n"
+"HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM \"AS IS\" WITHOUT WARRANTY\n"
+"OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,\n"
+"THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\n"
+"PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM\n"
+"IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF\n"
+"ALL NECESSARY SERVICING, REPAIR OR CORRECTION.\n"
+"\n"
+"  16. Limitation of Liability.\n"
+"\n"
+"  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING\n"
+"WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS\n"
+"THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY\n"
+"GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE\n"
+"USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF\n"
+"DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD\n"
+"PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),\n"
+"EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF\n"
+"SUCH DAMAGES.\n"
+"\n"
+"  17. Interpretation of Sections 15 and 16.\n"
+"\n"
+"  If the disclaimer of warranty and limitation of liability provided\n"
+"above cannot be given local legal effect according to their terms,\n"
+"reviewing courts shall apply local law that most closely approximates\n"
+"an absolute waiver of all civil liability in connection with the\n"
+"Program, unless a warranty or assumption of liability accompanies a\n"
+"copy of the Program in return for a fee."))
diff --git a/lifescale/gui/dialog_about.ui b/lifescale/gui/dialog_about.ui
new file mode 100644
index 0000000000000000000000000000000000000000..bd3dcc2e802d91b1da378343dd4709497e08d754
--- /dev/null
+++ b/lifescale/gui/dialog_about.ui
@@ -0,0 +1,898 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Dialog_about</class>
+ <widget class="QDialog" name="Dialog_about">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>610</width>
+    <height>677</height>
+   </rect>
+  </property>
+  <property name="minimumSize">
+   <size>
+    <width>610</width>
+    <height>500</height>
+   </size>
+  </property>
+  <property name="windowTitle">
+   <string>About</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_3">
+   <item>
+    <widget class="QLabel" name="label_2">
+     <property name="font">
+      <font>
+       <pointsize>12</pointsize>
+       <weight>75</weight>
+       <bold>true</bold>
+      </font>
+     </property>
+     <property name="text">
+      <string>LifeScale utils</string>
+     </property>
+     <property name="textFormat">
+      <enum>Qt::AutoText</enum>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QFormLayout" name="formLayout">
+     <item row="0" column="0">
+      <widget class="QLabel" name="label_8">
+       <property name="text">
+        <string>Version:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1">
+      <widget class="QLabel" name="label_version">
+       <property name="text">
+        <string>version</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="0">
+      <widget class="QLabel" name="label_6">
+       <property name="text">
+        <string>Contact:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <widget class="QLabel" name="label_email">
+       <property name="text">
+        <string>email</string>
+       </property>
+      </widget>
+     </item>
+     <item row="3" column="0">
+      <widget class="QLabel" name="label_7">
+       <property name="text">
+        <string>Copyright:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="3" column="1">
+      <widget class="QLabel" name="label_copyright">
+       <property name="text">
+        <string>copyright</string>
+       </property>
+      </widget>
+     </item>
+     <item row="4" column="0">
+      <widget class="QLabel" name="label_9">
+       <property name="text">
+        <string>Git repository:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="4" column="1">
+      <widget class="QLabel" name="label_git_repo">
+       <property name="text">
+        <string>git_repo</string>
+       </property>
+       <property name="openExternalLinks">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="5" column="0">
+      <widget class="QLabel" name="label_5">
+       <property name="text">
+        <string>pypi.org repository:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="5" column="1">
+      <widget class="QLabel" name="label_pypi_repo">
+       <property name="text">
+        <string>pypi_repo</string>
+       </property>
+      </widget>
+     </item>
+     <item row="2" column="0">
+      <widget class="QLabel" name="label_10">
+       <property name="text">
+        <string>Author:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="2" column="1">
+      <widget class="QLabel" name="label_author">
+       <property name="text">
+        <string>author</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeType">
+      <enum>QSizePolicy::Fixed</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>10</height>
+      </size>
+     </property>
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+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QLabel" name="label_4">
+       <property name="text">
+        <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;LifeScale utils was funded by the &lt;a href=&quot;https://cmess.univie.ac.at/&quot;&gt;&lt;span style=&quot; text-decoration: underline; color:#0000ff;&quot;&gt;Centre for Microbiology and Environmental Systems Science (CMESS) of the University of Vienna&lt;/span&gt;&lt;/a&gt;.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+       </property>
+       <property name="wordWrap">
+        <bool>true</bool>
+       </property>
+       <property name="openExternalLinks">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="label">
+       <property name="text">
+        <string/>
+       </property>
+       <property name="pixmap">
+        <pixmap resource="resources.qrc">:/logos/logos/Uni_Logo_2016_SW_230px-wide.jpg</pixmap>
+       </property>
+       <property name="scaledContents">
+        <bool>false</bool>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <spacer name="verticalSpacer_2">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeType">
+      <enum>QSizePolicy::Fixed</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>10</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item>
+    <widget class="QGroupBox" name="groupBox">
+     <property name="title">
+      <string>License</string>
+     </property>
+     <layout class="QVBoxLayout" name="verticalLayout_2">
+      <item>
+       <layout class="QVBoxLayout" name="verticalLayout">
+        <item>
+         <widget class="QLabel" name="label_3">
+          <property name="text">
+           <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;LifeScale utils is licensed under the &lt;a href=&quot;https://www.gnu.org/licenses/gpl-3.0.de.html&quot;&gt;&lt;span style=&quot; text-decoration: underline; color:#0000ff;&quot;&gt;GNU General Public License 3&lt;/span&gt;&lt;/a&gt;.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+          </property>
+          <property name="openExternalLinks">
+           <bool>true</bool>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QPlainTextEdit" name="plainTextEdit">
+          <property name="font">
+           <font>
+            <pointsize>10</pointsize>
+           </font>
+          </property>
+          <property name="plainText">
+           <string> GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. &lt;https://fsf.org/&gt;
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
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+
+  A patent license is &quot;discriminatory&quot; if it does not include within
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+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
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+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
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+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License &quot;or any later version&quot; applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM &quot;AS IS&quot; WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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+  16. Limitation of Liability.
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Close</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="resources.qrc"/>
+ </resources>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>Dialog_about</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>Dialog_about</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/lifescale/gui/gui_main.py b/lifescale/gui/gui_main.py
index 4bfbecadb8f7a91011c94714f3e6c0adcc92de1f..cc2f81d56641db6930cf7ff7cab97527ae8facf4 100644
--- a/lifescale/gui/gui_main.py
+++ b/lifescale/gui/gui_main.py
@@ -1,8 +1,30 @@
 import sys
 import os
-from PyQt6.QtWidgets import QApplication, QMainWindow
+from PyQt6.QtWidgets import QApplication, QMainWindow, QMessageBox, QFileDialog, QDialog
+from PyQt6.QtCore import pyqtSlot, QDir, Qt
+import numpy as np
+import pyqtgraph as pg
 
 from lifescale.gui.MainWindow import Ui_MainWindow
+from lifescale.gui.dialog_about import Ui_Dialog_about
+from lifescale.models.ls_data import LSData
+from lifescale.gui.panel_metadata_model import PanelMetadataModel
+from lifescale.gui.sample_summary_model import SampleSummaryModel
+from lifescale.gui.masses_model import MassesModel
+from lifescale.gui import resources
+from lifescale import __version__, __author__, __git_repo__, __email__, __copyright__, __pypi_repo__
+
+# https://numpy.org/doc/stable/reference/generated/numpy.histogram_bin_edges.html#numpy.histogram_bin_edges
+NUMPY_HISTOGRAM_BIN_EDGES_OPTIONS = {
+    'auto': 'Maximum of the ‘sturges’ and ‘fd’ estimators. Provides good all around performance.',
+    'fd': 'Freedman Diaconis Estimator: Robust (resilient to outliers) estimator that takes into account data variability and data size.',
+    'doane': 'An improved version of Sturges’ estimator that works better with non-normal datasets.',
+    'scott': 'Estimator based on leave-one-out cross-validation estimate of the integrated squared error. Can be regarded as a generalization of Scott’s rule.',
+    'rice': 'Estimator does not take variability into account, only data size. Commonly overestimates number of bins required.',
+    'sturges': 'R’s default method, only accounts for data size. Only optimal for gaussian data and underestimates number of bins for large non-gaussian datasets.',
+    'sqrt': 'Square root (of data size) estimator, used by Excel and other programs for its speed and simplicity.',
+    'Num. of bins': 'User defined number of bins (max. 1000).'
+}
 
 
 class MainWindow(QMainWindow, Ui_MainWindow):
@@ -11,15 +33,450 @@ class MainWindow(QMainWindow, Ui_MainWindow):
     def __init__(self):
         """Initializer."""
 
+        # Attributes:
+        # - GUI objects:
+        self.sample_list = None
+        self.glw_sample_histogram = None
+        self.sample_histogram = None
+        self.masses_region = None
+        self.hist_marker_mean_all = None
+        self.hist_marker_mean_selected = None
+        self.hist_marker_median_selected = None
+        self.hist_marker_median_all = None
+        self.hist = None
+        # - other objects:
+        self.ls_data = None
+        self.settings = {
+            'hist_number_of_bins': None,
+            'hist_bin_mode': 'auto',
+        }
+
         # GUI:
         super().__init__()
         self.setupUi(self)
 
         # Connect signals and slots:
+        self.action_Exit.triggered.connect(self.exit_application)
+        self.actionLoad_xlsm_file.triggered.connect(self.on_menu_file_load_xlsm_file)
+        self.action_About.triggered.connect(self.on_menu_help_about)
+        self.action_csvFiles.triggered.connect(self.on_action_csvFiles)
+        self.listWidget_Samples.itemSelectionChanged.connect(self.on_selection_changed_sample_list)
+        self.checkBox_MassesShowTable.stateChanged.connect(self.on_checkBox_MassesShowTable_stateChanged)
+        self.comboBox_histMethod.currentIndexChanged.connect(self.on_histogram_bin_method_currentIndexChanged)
+        self.checkBox_plotMedian.stateChanged.connect(self.on_checkBox_plotMedian_stateChanged)
+        self.checkBox_plotMean.stateChanged.connect(self.on_checkBox_plotMean_stateChanged)
+        self.comboBox_histMethod.currentIndexChanged.connect(self.on_selection_changed_sample_list)
+        self.spinBox_histBins.valueChanged.connect(self.on_selection_changed_sample_list)
 
         # Set up GUI items and widgets:
+        self.status = self.statusBar()
+        self.set_up_sample_histogram()
+        self.set_up_sample_list()
+        self.set_up_hist_method_comboBox()
+
+        # GUI dialogs:
+        self.dlg_about = DialogAbout()
+        self.dlg_about.label_version.setText(__version__)
+        self.dlg_about.label_git_repo.setText(__git_repo__)
+        self.dlg_about.label_pypi_repo.setText(__pypi_repo__)
+        self.dlg_about.label_email.setText(__email__)
+        self.dlg_about.label_copyright.setText(__copyright__)
+        self.dlg_about.label_author.setText(__author__)
 
         # Init models:
+        self.panel_metadata_model = None
+        self.sample_summary_model = None
+        self.masses_model = None
+
+    @pyqtSlot()
+    def on_action_csvFiles(self):
+        """Invoked when pressing Export CSV files."""
+        if self.ls_data is None:
+            QMessageBox.warning(self, 'Warning!', 'No data available!')
+            return
+
+        if (self.ls_data.df_panel_data is None) and (self.ls_data.df_panel_data is None) and (self.ls_data.df_masses is None):
+            QMessageBox.warning(self, 'Warning!', 'No LifeScale data available!')
+            return
+        self.export_csv()
+
+    def export_csv(self):
+        """Export ls data to csv files."""
+
+        # Get output directory:
+        output_dir_name = QFileDialog.getExistingDirectory(self,
+                                                           caption='Select an output directory',
+                                                           directory=self.get_work_dir(),
+                                                           options=QFileDialog.Option.ShowDirsOnly)
+        # Write files
+        try:
+            self.ls_data.export_csv_files(output_dir_name, sort_by_time=False)
+        except Exception as e:
+            QMessageBox.critical(self, 'Error!', str(e))
+            self.statusBar().showMessage(f'No LS data exportet.')
+        else:
+            self.status.showMessage(f'Exported CSV files to: {output_dir_name}')
+
+    @pyqtSlot()
+    def on_checkBox_plotMedian_stateChanged(self):
+        """Invoked whenever the state changes."""
+        if self.sample_histogram is not None:
+            if self.masses_model is not None:
+                self.plot_hist_mean_median_marker(self.masses_model.get_current_sample_id)
+
+    @pyqtSlot()
+    def on_checkBox_plotMean_stateChanged(self):
+        """Invoked whenever the state changes."""
+        if self.sample_histogram is not None:
+            if self.masses_model is not None:
+                self.plot_hist_mean_median_marker(self.masses_model.get_current_sample_id)
+
+    @pyqtSlot()
+    def on_pushButton_resetMassLimits_pressed(self):
+        """Invoked whenever the button `pushButton_resetMassLimits` is pressed."""
+        self.ls_data.reset_flag_masses(self.masses_model.get_current_sample_id)
+        self.ls_data.calc_sample_statistics(selection_only=True)
+        self.plot_masses_histogram(self.masses_model.get_current_sample_id)
+        self.print_sample_statistics(self.masses_model.get_current_sample_id)
+
+    def set_up_sample_histogram(self):
+        """Set up `self.GraphicsLayoutWidget_stations_map` widget."""
+        self.glw_sample_histogram = self.GraphicsLayoutWidget_SampelHistogram
+        self.glw_sample_histogram.setBackground('w')  # white background color
+        # Create sub-plots:
+        self.sample_histogram = self.glw_sample_histogram.addPlot(0, 0, name='sample_histogram')
+        self.sample_histogram.setLabel(axis='left', text='Number of Samples')
+        self.sample_histogram.setLabel(axis='bottom', text='Mass')
+        self.sample_histogram.setTitle('Sample Histogram')
+        # self.stations_map.addLegend()
+        self.sample_histogram.setMouseEnabled(y=False)
+
+    def set_up_hist_method_comboBox(self):
+        """Set up the histogram method combo box."""
+        self.comboBox_histMethod.addItems(list(NUMPY_HISTOGRAM_BIN_EDGES_OPTIONS.keys()))
+        # self.histogram_bin_method_selection(0)  # default: i. item in dict
+
+    @pyqtSlot()
+    def on_histogram_bin_method_currentIndexChanged(self):
+        """Select bin determination method."""
+        self.settings['hist_bin_mode'] = self.comboBox_histMethod.currentText()
+        self.settings['hist_number_of_bins'] = self.spinBox_histBins.value()
+        self.label_histBinMethodDescription.setText(NUMPY_HISTOGRAM_BIN_EDGES_OPTIONS[self.settings['hist_bin_mode']])
+        if self.settings['hist_bin_mode'] == 'Num. of bins':
+            self.label_numberOfBins.setEnabled(True)
+            self.spinBox_histBins.setEnabled(True)
+        else:
+            self.label_numberOfBins.setEnabled(False)
+            self.spinBox_histBins.setEnabled(False)
+
+    def get_hist_bin_method(self):
+        """Get selected bin method from GUI."""
+        bins = self.comboBox_histMethod.currentText()
+        if bins == 'Num. of bins':
+            bins = self.spinBox_histBins.value()
+        return bins
+
+    @pyqtSlot(int)
+    def on_checkBox_MassesShowTable_stateChanged(self, state):
+        """Invoked whenever the state of the shoe massed checkbox changes."""
+        self.set_model_tableView_Masses_based_on_checkbox_state()
+
+    def set_model_tableView_Masses_based_on_checkbox_state(self):
+        """Connect/disconnect the model of the masses table view based on checkbox state."""
+        if self.checkBox_MassesShowTable.isChecked():
+            self.tableView_Masses.setModel(self.masses_model)
+        else:
+            self.tableView_Masses.setModel(None)
+
+    @pyqtSlot()
+    def on_menu_file_load_xlsm_file(self):
+        """Launch file selection dialog to load data from an xlsm file."""
+
+        if self.ls_data is not None:
+            reply = QMessageBox.question(self,
+                                         'Message',
+                                         f'Overwrite data from: {self.ls_data.run_name}',
+                                         QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
+                                         QMessageBox.StandardButton.No)
+            if reply == QMessageBox.StandardButton.No:
+                return
+            self.reset_gui()  # Clear and reset all items
+
+        xlsm_filename, _ = QFileDialog.getOpenFileName(self,
+                                                       caption='Select LifeScale data file (xlsm format)',
+                                                       directory=self.get_work_dir(),
+                                                       filter="LifeScale data file (*.xlsm)")
+
+        if xlsm_filename:
+            xlsm_filename = QDir.toNativeSeparators(xlsm_filename)
+            try:
+                ls_data = LSData.from_xlsm_file(xlsm_filename)
+                ls_data.calc_sample_statistics()
+            except Exception as e:
+                QMessageBox.critical(self, 'Error!', str(e))
+                self.statusBar().showMessage(f"No LS data loaded.")
+            else:
+                self.ls_data = ls_data
+                self.status.showMessage(f'Loaded: {ls_data}')
+                self.setWindowTitle(self.ls_data.run_name)
+                self.set_up_panel_metadata_view_model()
+                self.set_up_sample_summary_view_model()
+                self.set_up_masses_view_model()
+                self.update_sample_list()
+        else:
+            self.statusBar().showMessage(f"No LS data loaded.")
+
+    def set_up_sample_list(self):
+        """Set up sample list widget"""
+        self.sample_list = self.listWidget_Samples
+
+    def print_sample_statistics(self, sample_id):
+        """Print sample statistics in GUI."""
+        sample_data = self.ls_data.df_interval_analysis.loc[self.ls_data.df_interval_analysis['SampleID'] == sample_id]
+        if len(sample_data) == 0:
+            raise IndexError(f'No sample dataset found for sample ID = {sample_id}')
+
+        self.label_median.setText(
+            f'{sample_data["Mass_median"].item():.3f} ({sample_data["Mass_median_keep"].item():.3f})')
+        self.label_mean.setText(f'{sample_data["MeanMass"].item():.3f} ({sample_data["Mass_mean_keep"].item():.3f})')
+        self.label_std.setText(f'{sample_data["Mass_std"].item():.3f} ({sample_data["Mass_std_keep"].item():.3f})')
+        self.label_iqr.setText(f'{sample_data["Mass_iqr"].item():.3f} ({sample_data["Mass_iqr_keep"].item():.3f})')
+        self.label_rcv.setText(
+            f'{sample_data["Mass_rCV"].item():.3f} ({sample_data["Mass_rCV_keep"].item():.3f})')
+        if sample_data["keep_min_mass"].isna().item() and sample_data["keep_max_mass"].isna().item():
+            self.label_selectionLimits.clear()
+            self.label_SelectedMasse.setText('No selection')
+        else:
+            self.label_selectionLimits.setText(
+                f'[{sample_data["keep_min_mass"].item():.3f}, {sample_data["keep_max_mass"].item():.3f}]')
+            num_selected = sample_data['DetectedParticles_keep'].item()
+            num_all = sample_data['DetectedParticles'].item()
+            selected_percent = (num_selected / num_all) * 100
+            self.label_SelectedMasse.setText(f'{num_selected:.0f} of {num_all:.0f} ({selected_percent:.3f} %)')
+
+    def update_sample_list(self):
+        """Update sample list widget and add """
+        # TODO: SampleDescription zu jedem Sample hinzufügen, siehe: ls_data.df_panel_data.SampleDescription
+        self.sample_list.clear()
+        # self.sample_list.addItems(self.ls_data.get_sample_ids)
+        self.sample_list.addItems(self.sample_summary_model.get_sample_list_tags)
+
+    @pyqtSlot()
+    def on_selection_changed_sample_list(self):
+        """Invoked whenever the item selection changed."""
+        items = self.sample_list.selectedItems()
+        if len(items) == 1:
+            sample_id = items[0].text().split(':')[0]  # Extract sample ID from tag
+            # TODO: Update gui models, plots, tables and statistics!
+            self.update_masses_table_view(sample_id)
+            self.status.showMessage(f'{len(self.masses_model.get_data)} mass(es) in sample {sample_id}.')
+            self.plot_masses_histogram(sample_id)
+            self.print_sample_statistics(sample_id)
+
+        else:
+            print('No or multiple items selected!')
+
+    def plot_masses_histogram(self, sample_id, bins='auto'):
+        """Create a histogram of masses of a single sample."""
+        # ## compute standard histogram
+        # y, x = np.histogram(vals, bins=np.linspace(-3, 8, 40))
+        #
+        # ## notice that len(x) == len(y)+1
+        # ## We are required to use stepMode=True so that PlotCurveItem will interpret this data correctly.
+        # curve = pg.PlotCurveItem(x, y, stepMode=True, fillLevel=0, brush=(0, 0, 255, 80))
+        # plt1.addItem(curve)
+        #
+        # Get min and max mass threshold:
+        tmp_filter = self.ls_data.df_interval_analysis['SampleID'] == sample_id
+        keep_min_mass = self.ls_data.df_interval_analysis.loc[tmp_filter, 'keep_min_mass'].item()
+        keep_max_mass = self.ls_data.df_interval_analysis.loc[tmp_filter, 'keep_max_mass'].item()
+
+        # Get bin method:
+        bins = self.get_hist_bin_method()
+
+        self.sample_histogram.clear()
+        masses = self.masses_model.get_data['Mass']
+        y, x = np.histogram(masses, bins=bins)
+        self.hist = pg.PlotCurveItem(x, y, stepMode=True, fillLevel=0, brush=(0, 0, 255, 80))
+        self.sample_histogram.addItem(self.hist)
+
+        # Get region limits:
+        if keep_min_mass is None:
+            x_min = x.min()
+        else:
+            x_min = keep_min_mass
+        if keep_max_mass is None:
+            x_max = x.max()
+        else:
+            x_max = keep_max_mass
+
+        # Linear Reagions:
+        pen = pg.mkPen(color='r', width=10)
+        # https://pyqtgraph.readthedocs.io/en/latest/api_reference/graphicsItems/linearregionitem.html
+        self.masses_region = pg.LinearRegionItem([x_min, x_max],
+                                                 # bounds=[x.min(), x.max()],  # use clipItem instead
+                                                 swapMode='block',
+                                                 clipItem=self.hist,
+                                                 hoverPen=pen)
+        self.masses_region.setZValue(-10)
+        self.sample_histogram.addItem(self.masses_region)
+        self.masses_region.sigRegionChangeFinished.connect(self.on_masses_region_sigRegionChangeFinished)
+
+        # Mean and median marker:
+        self.plot_hist_mean_median_marker(sample_id)
+
+    def plot_hist_mean_median_marker(self, sample_id: str):
+        """Plot mean and median marker to the histogram plot."""
+        if self.sample_histogram.legend is not None:
+            self.sample_histogram.legend.clear()
+        if self.hist_marker_mean_all is not None:
+            self.hist_marker_mean_all.clear()
+        if self.hist_marker_mean_selected is not None:
+            self.hist_marker_mean_selected.clear()
+        if self.hist_marker_median_all is not None:
+            self.hist_marker_median_all.clear()
+        if self.hist_marker_median_selected is not None:
+            self.hist_marker_median_selected.clear()
+
+        if self.checkBox_plotMean.isChecked() or self.checkBox_plotMedian.isChecked():
+
+            self.sample_histogram.addLegend()
+
+            tmp_filter = self.ls_data.df_interval_analysis['SampleID'] == sample_id
+            mean_all = self.ls_data.df_interval_analysis.loc[tmp_filter, 'MeanMass'].item()
+            mean_keep = self.ls_data.df_interval_analysis.loc[tmp_filter, 'Mass_mean_keep'].item()
+            median_all = self.ls_data.df_interval_analysis.loc[tmp_filter, 'Mass_median'].item()
+            median_keep = self.ls_data.df_interval_analysis.loc[tmp_filter, 'Mass_median_keep'].item()
+
+            # y_max = self.sample_histogram.getAxis('left').range[1]
+            y_max = self.hist.getData()[1].max()
+
+            if self.checkBox_plotMean.isChecked():
+                pen = pg.mkPen(color='b', width=1)
+                self.hist_marker_mean_all = self.sample_histogram.plot([mean_all, mean_all], [0.0, y_max],
+                                                                       name=f'Mean (all)',
+                                                                       pen=pen)
+                pen = pg.mkPen(color='r', width=1)
+                self.hist_marker_mean_selected = self.sample_histogram.plot([mean_keep, mean_keep], [0.0, y_max],
+                                                                            name=f'Mean (selected)',
+                                                                            pen=pen)
+            if self.checkBox_plotMedian.isChecked():
+                pen = pg.mkPen(color='b', width=1, style=Qt.PenStyle.DotLine)
+                self.hist_marker_median_all = self.sample_histogram.plot([median_all, median_all], [0.0, y_max],
+                                                                         name=f'Median (all)',
+                                                                         pen=pen)
+                pen = pg.mkPen(color='r', width=1, style=Qt.PenStyle.DotLine)
+                self.hist_marker_median_selected = self.sample_histogram.plot([median_keep, median_keep], [0.0, y_max],
+                                                                              name=f'Median (selected)',
+                                                                              pen=pen)
+
+    @pyqtSlot()
+    def on_masses_region_sigRegionChangeFinished(self):
+        """Invoked whenever the masses selection region changed."""
+        [min_mass, max_mass] = self.masses_region.getRegion()
+        print(f'Mass selection changed: min={min_mass:.3f}, max={max_mass:.3f}')
+        info_string = self.ls_data.flag_masses(min_mass,
+                                               max_mass,
+                                               sample_id=self.masses_model.get_current_sample_id)  # Set flag in ls_data object
+        self.status.showMessage(info_string)
+        self.update_masses_table_view(sample_id=self.masses_model.get_current_sample_id)
+        self.ls_data.calc_sample_statistics(selection_only=True)
+        self.print_sample_statistics(self.masses_model.get_current_sample_id)
+        self.plot_hist_mean_median_marker(self.masses_model.get_current_sample_id)
+
+    def reset_gui(self):
+        """Clean and reset all GUI items, e.g. when loading new data."""
+        self.sample_list.clear()
+
+    def set_up_panel_metadata_view_model(self):
+        """Set up the panel metadata table view model."""
+        try:
+            self.panel_metadata_model = PanelMetadataModel(self.ls_data.df_panel_data)
+        except AttributeError:
+            QMessageBox.warning(self, 'Warning!', 'No panel metadata available!')
+        except Exception as e:
+            QMessageBox.critical(self, 'Error!', str(e))
+        else:
+            self.tableView_PanelMetadata.setModel(self.panel_metadata_model)
+            self.tableView_PanelMetadata.resizeColumnsToContents()
+
+    def set_up_sample_summary_view_model(self):
+        """Set up the sample summary table view model."""
+        try:
+            self.sample_summary_model = SampleSummaryModel(self.ls_data.df_interval_analysis)
+        except AttributeError:
+            QMessageBox.warning(self, 'Warning!', 'No sample summary data available!')
+        except Exception as e:
+            QMessageBox.critical(self, 'Error!', str(e))
+        else:
+            self.tableView_SampleSummary.setModel(self.sample_summary_model)
+            self.tableView_SampleSummary.resizeColumnsToContents()
+
+    def update_sample_summary_view_model(self):
+        """Update the sample summary table view after changing the model."""
+        pass
+
+    def set_up_masses_view_model(self):
+        """Set up the masses table view model."""
+        try:
+            self.masses_model = MassesModel(self.ls_data.df_masses)
+        except AttributeError:
+            QMessageBox.warning(self, 'Warning!', 'No masses data available!')
+        except Exception as e:
+            QMessageBox.critical(self, 'Error!', str(e))
+        else:
+            self.set_model_tableView_Masses_based_on_checkbox_state()
+            self.tableView_Masses.resizeColumnsToContents()
+            # self.masses_model.dataChanged.connect(self.on_masses_model_data_changed)
+
+    def update_masses_table_view(self, sample_id: int):
+        """Update the masses table view according to the sample selection"""
+        self.masses_model.update_view_model(sample_id)
+        self.masses_model.layoutChanged.emit()  # Show changes in table view
+        # Workaround: https://stackoverflow.com/questions/8199747/sizing-to-fit-rows-and-columns-in-a-qtableview-is-very-slow
+        # self.tableView_Masses.resizeColumnsToContents()  # Takes a very long time to execute!
+
+    def closeEvent(self, event):
+        """Ask the user whether to close the main window or not!"""
+        reply = QMessageBox.question(self,
+                                     'Message',
+                                     "Are you sure to quit?",
+                                     QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
+                                     QMessageBox.StandardButton.No)
+        if reply == QMessageBox.StandardButton.Yes:
+            event.accept()
+        else:
+            event.ignore()
+
+    @pyqtSlot()
+    def exit_application(self):
+        """Exit the application."""
+        reply = QMessageBox.question(self,
+                                     'Message',
+                                     "Are you sure to quit?",
+                                     QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
+                                     QMessageBox.StandardButton.No)
+        if reply == QMessageBox.StandardButton.Yes:
+            sys.exit()
+
+    def get_work_dir(self):
+        """Returns the current working directory for file dialogs"""
+        return os.getcwd()
+
+    @pyqtSlot()
+    def on_menu_help_about(self):
+        """Launch the about dialog."""
+        return_value = self.dlg_about.exec()
+
+
+class DialogAbout(QDialog, Ui_Dialog_about):
+    """About dialog."""
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+
+        # Run the .setupUi() method to show the GUI
+        self.setupUi(self)
 
 
 def main():
@@ -32,7 +489,8 @@ def main():
     main_window.show()
     # Run the application's main loop:
     sys.exit(
-        app.exec())  # exit or error code of Qt (app.exec_) is passed to sys.exit. Terminates pgm with standard python method
+        app.exec())  # exit or error code of Qt (app.exec_) is passed to sys.exit. Terminates pgm with standard
+    # python method
 
 
 if __name__ == "__main__":
diff --git a/lifescale/gui/logos/Uni_Logo_2016_SW_230px-wide.jpg b/lifescale/gui/logos/Uni_Logo_2016_SW_230px-wide.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..79768fc13e9f9d82281afbc42611db303b68fe61
Binary files /dev/null and b/lifescale/gui/logos/Uni_Logo_2016_SW_230px-wide.jpg differ
diff --git a/lifescale/gui/masses_model.py b/lifescale/gui/masses_model.py
new file mode 100644
index 0000000000000000000000000000000000000000..9238ea0023ab387558767a3e3a9ae8e12f53c7a2
--- /dev/null
+++ b/lifescale/gui/masses_model.py
@@ -0,0 +1,160 @@
+"""Masses model class for PyQt's model view architectrue.
+
+Copyright (C) 2022  Andreas Hellerschmied <heller182@gmx.at>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+"""
+
+from PyQt6.QtCore import QAbstractTableModel, Qt
+from PyQt6.QtWidgets import QMessageBox
+from PyQt6 import QtGui
+
+
+NONE_REPRESENTATION_IN_TABLE_VIEW = ''  # Representation of None values in table views in the GUI
+
+
+class MassesModel(QAbstractTableModel):
+    """Model for the masses table view."""
+
+    # Number of decimal pla
+    _DECIMAL_PLACES_PER_FLOAT_COLUMN = {
+        'Time': 3,
+        'Mass': 3,
+        'Volume': 3,
+        'TransitTime': 3,
+        'PressureDrop': 5,
+    }
+
+    def __init__(self, df):
+        QAbstractTableModel.__init__(self)
+        self._data = None
+        self._masses = None
+        self._current_sample_id = None
+        self.load_data(df)
+
+    def load_data(self, df):
+        """Load data from pandas dataframe to table model.
+
+        Notes
+        -----
+        The data is assigned by reference, i.e. all changes in `_masses` will propagate to the data origin (`df`).
+        """
+        # self._masses = df.copy(deep=True)
+        self._masses = df
+
+    def update_view_model(self, sample_id: int):
+        """Update the `_data` DataFrame that hold the actual data that is displayed."""
+        try:
+            df_masses_slice = self._masses.loc[self._masses['SampleID'] == sample_id]
+        except KeyError:
+            self._current_sample_id = None
+            self._data = None
+            QMessageBox.critical(self.parent(), 'Error!', f'SampleID "{sample_id}" is not available.')
+        else:
+            self._current_sample_id = sample_id
+            self._data = df_masses_slice
+
+    def rowCount(self, parent=None):
+        if self._data is not None:
+            return self._data.shape[0]
+        else:
+            return 0
+
+    def columnCount(self, parent=None):
+        if self._data is not None:
+            return self._data.shape[1]
+        else:
+            return 0
+
+    def data(self, index, role=Qt.ItemDataRole.DisplayRole):
+        if index.isValid():
+
+            value = self._data.iloc[index.row(), index.column()]
+            column_name = self.get_colum_names[index.column()]
+
+            if role == Qt.ItemDataRole.DisplayRole:
+
+                # Custom formatter (string is expected as return type):
+                if value is None:  #
+                    return NONE_REPRESENTATION_IN_TABLE_VIEW
+                elif isinstance(value, float):
+                    if value != value:  # True, if value is "NaN"
+                        return NONE_REPRESENTATION_IN_TABLE_VIEW
+                    else:
+                        if column_name in self._DECIMAL_PLACES_PER_FLOAT_COLUMN.keys():
+                            num_dec_places = self._DECIMAL_PLACES_PER_FLOAT_COLUMN[column_name]
+                            return '{1:.{0}f}'.format(num_dec_places, value)
+                        else:
+                            return str(value)
+                else:  # all other
+                    return str(value)
+
+            if role == Qt.ItemDataRole.TextAlignmentRole:
+                # value = self._data.iloc[index.row(), index.column()]
+                if isinstance(value, int) or isinstance(value, float):
+                    # Align right, vertical middle.
+                    return Qt.AlignmentFlag.AlignVCenter + Qt.AlignmentFlag.AlignRight
+
+            if role == Qt.ItemDataRole.BackgroundRole:
+                if ~self._data.iloc[index.row()].keep:
+                    return QtGui.QColor('red')
+
+            # if role == Qt.CheckStateRole:
+            #     try:
+            #         if column_name == 'is_datum':
+            #             keep_obs_flag = self._data.iloc[index.row(), self._data_column_names.index('is_datum')]
+            #             if keep_obs_flag:
+            #                 return Qt.Checked
+            #             else:
+            #                 return Qt.Unchecked
+            #     except Exception:
+            #         return None
+        return None
+
+    def headerData(self, section, orientation, role):
+        # section is the index of the column/row.
+        if role == Qt.ItemDataRole.DisplayRole:
+            if self._data is not None:
+                if orientation == Qt.Orientation.Horizontal:
+                    # return self._SHOW_COLUMNS_IN_TABLE_DICT[str(self._data.columns[section])]
+                    return str(self._data.columns[section])
+                if orientation == Qt.Orientation.Vertical:
+                    return str(self._data.index[section])
+
+    def flags(self, index):
+        """Enable editing of table items."""
+        flags = super(self.__class__, self).flags(index)
+        flags |= Qt.ItemFlag.ItemIsSelectable
+        flags |= Qt.ItemFlag.ItemIsEnabled
+        flags |= Qt.ItemFlag.ItemIsDragEnabled
+        flags |= Qt.ItemFlag.ItemIsDropEnabled
+        return flags
+
+    @property
+    def get_data(self):
+        return self._data
+
+    @property
+    def get_colum_names(self):
+        """Return a list with all columns."""
+        if self._data is not None:
+            return self._data.columns.to_list()
+        else:
+            return None
+
+    @property
+    def get_current_sample_id(self):
+        """Return the current sample ID."""
+        return self._current_sample_id
+
diff --git a/lifescale/gui/panel_metadata_model.py b/lifescale/gui/panel_metadata_model.py
new file mode 100644
index 0000000000000000000000000000000000000000..4b4a40f9cc37342f609be4bc89368dbb69f9b01a
--- /dev/null
+++ b/lifescale/gui/panel_metadata_model.py
@@ -0,0 +1,127 @@
+"""Panel data model class for PyQt's model view architectrue.
+
+Copyright (C) 2022  Andreas Hellerschmied <heller182@gmx.at>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+"""
+
+from PyQt6.QtCore import QAbstractTableModel, Qt
+
+
+NONE_REPRESENTATION_IN_TABLE_VIEW = ''  # Representation of None values in table views in the GUI
+
+
+class PanelMetadataModel(QAbstractTableModel):
+    """Model for the panel metadata table view."""
+
+    # Number of decimal pla
+    _DECIMAL_PLACES_PER_FLOAT_COLUMN = {
+        'long_deg': 3,
+    }
+
+    def __init__(self, df_panel_data):
+        QAbstractTableModel.__init__(self)
+        self._data = None
+        self.load_df_panel_data(df_panel_data)
+
+    def load_df_panel_data(self, df_panel_data):
+        """Load data from pandas dataframe to table model."""
+        self._data = df_panel_data.copy(deep=True)
+
+    def rowCount(self, parent=None):
+        return self._data.shape[0]
+
+    def columnCount(self, parent=None):
+        return self._data.shape[1]
+
+    def data(self, index, role=Qt.ItemDataRole.DisplayRole):
+        if index.isValid():
+
+            value = self._data.iloc[index.row(), index.column()]
+            column_name = self.get_colum_names[index.column()]
+
+            if role == Qt.ItemDataRole.DisplayRole:
+
+                # Custom formatter (string is expected as return type):
+                if value is None:  #
+                    return NONE_REPRESENTATION_IN_TABLE_VIEW
+                elif isinstance(value, float):
+                    if value != value:  # True, if value is "NaN"
+                        return NONE_REPRESENTATION_IN_TABLE_VIEW
+                    else:
+                        if column_name in self._DECIMAL_PLACES_PER_FLOAT_COLUMN.keys():
+                            num_dec_places = self._DECIMAL_PLACES_PER_FLOAT_COLUMN[column_name]
+                            return '{1:.{0}f}'.format(num_dec_places, value)
+                        else:
+                            return str(value)
+                else:  # all other
+                    return str(value)
+
+            if role == Qt.ItemDataRole.TextAlignmentRole:
+                # value = self._data.iloc[index.row(), index.column()]
+                if isinstance(value, int) or isinstance(value, float):
+                    # Align right, vertical middle.
+                    return Qt.AlignmentFlag.AlignVCenter + Qt.AlignmentFlag.AlignRight
+
+            # if role == Qt.BackgroundRole:
+            #     if column_name == 'is_datum':
+            #         if value:
+            #             return QtGui.QColor('red')
+            #
+            #     is_observed_flag = self._data.iloc[index.row(), 7]  # is_observed
+            #     if is_observed_flag:
+            #         return QtGui.QColor('cyan')
+
+            # if role == Qt.CheckStateRole:
+            #     try:
+            #         if column_name == 'is_datum':
+            #             keep_obs_flag = self._data.iloc[index.row(), self._data_column_names.index('is_datum')]
+            #             if keep_obs_flag:
+            #                 return Qt.Checked
+            #             else:
+            #                 return Qt.Unchecked
+            #     except Exception:
+            #         return None
+        return None
+
+    def headerData(self, section, orientation, role):
+        # section is the index of the column/row.
+        if role == Qt.ItemDataRole.DisplayRole:
+            if self._data is not None:
+                if orientation == Qt.Orientation.Horizontal:
+                    # return self._SHOW_COLUMNS_IN_TABLE_DICT[str(self._data.columns[section])]
+                    return str(self._data.columns[section])
+                if orientation == Qt.Orientation.Vertical:
+                    return str(self._data.index[section])
+
+    def flags(self, index):
+        """Enable editing of table items."""
+        flags = super(self.__class__, self).flags(index)
+        flags |= Qt.ItemFlag.ItemIsSelectable
+        flags |= Qt.ItemFlag.ItemIsEnabled
+        flags |= Qt.ItemFlag.ItemIsDragEnabled
+        flags |= Qt.ItemFlag.ItemIsDropEnabled
+        return flags
+
+    @property
+    def get_data(self):
+        return self._data
+
+    @property
+    def get_colum_names(self):
+        """Return a list with all columns."""
+        if self._data is not None:
+            return self._data.columns.to_list()
+        else:
+            return None
diff --git a/lifescale/gui/resources.py b/lifescale/gui/resources.py
new file mode 100644
index 0000000000000000000000000000000000000000..a44d85619d48720c4143b0cd4f92523bb2330093
--- /dev/null
+++ b/lifescale/gui/resources.py
@@ -0,0 +1,819 @@
+# Resource object code (Python 3)
+# Created by: object code
+# Created by: The Resource Compiler for Qt version 5.15.3
+# WARNING! All changes made in this file will be lost!
+
+from PyQt6 import QtCore
+
+qt_resource_data = b"\
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+`|\x85)@\xa5)@\xa5)@\xa5)@\xa5)\
+@\xa5)@\xa5)@\xa5)@\xa5)@\xa5)@\
+\xa5)@\xa5)@\xa5)@\xa5)@\xa5)@\xa5\
+)@\xa5)@\xa5)@\xa5)@\xa5)@\xa5)\
+@\xa5)@\xa5)@\xa5)@\xa5)@\xa5)@\
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+)@\xa5)@\xa5)@\xa5)@\xa5)@\xa5)\
+@\xa5)A\xff\xd9\
+"
+
+qt_resource_name = b"\
+\x00\x05\
+\x00s^c\
+\x00l\
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+\x00\x1f\
+\x04\x0e\xd5\xc7\
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+\x002\x003\x000\x00p\x00x\x00-\x00w\x00i\x00d\x00e\x00.\x00j\x00p\x00g\
+"
+
+qt_resource_struct = b"\
+\x00\x00\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00\x01\
+\x00\x00\x00\x00\x00\x00\x00\x00\
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+\x00\x00\x01\x87\xa8d!\x9f\
+"
+
+def qInitResources():
+    QtCore.qRegisterResourceData(0x03, qt_resource_struct, qt_resource_name, qt_resource_data)
+
+def qCleanupResources():
+    QtCore.qUnregisterResourceData(0x03, qt_resource_struct, qt_resource_name, qt_resource_data)
+
+qInitResources()
diff --git a/lifescale/gui/resources.qrc b/lifescale/gui/resources.qrc
new file mode 100644
index 0000000000000000000000000000000000000000..f458679ddc2c7f82f59e8d37ab3ddd556c8c99a4
--- /dev/null
+++ b/lifescale/gui/resources.qrc
@@ -0,0 +1,5 @@
+<RCC>
+  <qresource prefix="logos">
+    <file>logos/Uni_Logo_2016_SW_230px-wide.jpg</file>
+  </qresource>
+</RCC>
diff --git a/lifescale/gui/sample_summary_model.py b/lifescale/gui/sample_summary_model.py
new file mode 100644
index 0000000000000000000000000000000000000000..3742367812798012b67ee3ce18b2870bfdd512cf
--- /dev/null
+++ b/lifescale/gui/sample_summary_model.py
@@ -0,0 +1,173 @@
+"""Sample model class for PyQt's model view architectrue.
+
+Copyright (C) 2022  Andreas Hellerschmied <heller182@gmx.at>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+"""
+
+from PyQt6.QtCore import QAbstractTableModel, Qt
+from PyQt6 import QtGui
+
+
+NONE_REPRESENTATION_IN_TABLE_VIEW = ''  # Representation of None values in table views in the GUI
+
+
+class SampleSummaryModel(QAbstractTableModel):
+    """Model for the panel metadata table view."""
+
+    # Number of decimal pla
+    _DECIMAL_PLACES_PER_FLOAT_COLUMN = {
+        'Concentration': 1,
+        'StartTime': 3,
+        'EndTime': 3,
+        'MeanMass': 3,
+        'MassContent': 5,
+        'MeasuredVolume': 3,
+        'MeasuredVolume': 3,
+        'ResonantFrequency': 3,
+        'Mass_median': 3,
+        'Mass_std': 3,
+        'Mass_q25': 3,
+        'Mass_q75': 3,
+        'Mass_iqr': 3,
+        'keep_max_mass': 3,
+        'keep_min_mass': 3,
+        'DetectedParticles_keep': 0,
+        'Mass_mean_keep': 3,
+        'Mass_median_keep': 3,
+        'Mass_std_keep': 3,
+        'Mass_q25_keep': 3,
+        'Mass_q75_keep': 3,
+        'Mass_iqr_keep': 3,
+        'Mass_rCV_keep': 3,
+        'Mass_rCV': 3,
+    }
+
+    def __init__(self, df):
+        QAbstractTableModel.__init__(self)
+        self._data = None
+        self.load_data(df)
+
+    def load_data(self, df):
+        """Load data from pandas dataframe to table model."""
+        self._data = df
+
+    def rowCount(self, parent=None):
+        return self._data.shape[0]
+
+    def columnCount(self, parent=None):
+        return self._data.shape[1]
+
+    def data(self, index, role=Qt.ItemDataRole.DisplayRole):
+        if index.isValid():
+
+            value = self._data.iloc[index.row(), index.column()]
+            column_name = self.get_colum_names[index.column()]
+
+            if role == Qt.ItemDataRole.DisplayRole:
+
+                # Custom formatter (string is expected as return type):
+                if value is None:  #
+                    return NONE_REPRESENTATION_IN_TABLE_VIEW
+                elif isinstance(value, float):
+                    if value != value:  # True, if value is "NaN"
+                        return NONE_REPRESENTATION_IN_TABLE_VIEW
+                    else:
+                        if column_name in self._DECIMAL_PLACES_PER_FLOAT_COLUMN.keys():
+                            num_dec_places = self._DECIMAL_PLACES_PER_FLOAT_COLUMN[column_name]
+                            return '{1:.{0}f}'.format(num_dec_places, value)
+                        else:
+                            return str(value)
+                else:  # all other
+                    return str(value)
+
+            if role == Qt.ItemDataRole.TextAlignmentRole:
+                # value = self._data.iloc[index.row(), index.column()]
+                if isinstance(value, int) or isinstance(value, float):
+                    # Align right, vertical middle.
+                    return Qt.AlignmentFlag.AlignVCenter + Qt.AlignmentFlag.AlignRight
+
+            if role == Qt.ItemDataRole.BackgroundRole:
+                if (self._data.iloc[index.row()].keep_max_mass is not None) or (self._data.iloc[index.row()].keep_min_mass is not None):
+                    return QtGui.QColor('green')
+
+            # if role == Qt.BackgroundRole:
+            #     if column_name == 'is_datum':
+            #         if value:
+            #             return QtGui.QColor('red')
+            #
+            #     is_observed_flag = self._data.iloc[index.row(), 7]  # is_observed
+            #     if is_observed_flag:
+            #         return QtGui.QColor('cyan')
+
+            # if role == Qt.CheckStateRole:
+            #     try:
+            #         if column_name == 'is_datum':
+            #             keep_obs_flag = self._data.iloc[index.row(), self._data_column_names.index('is_datum')]
+            #             if keep_obs_flag:
+            #                 return Qt.Checked
+            #             else:
+            #                 return Qt.Unchecked
+            #     except Exception:
+            #         return None
+        return None
+
+    def headerData(self, section, orientation, role):
+        # section is the index of the column/row.
+        if role == Qt.ItemDataRole.DisplayRole:
+            if self._data is not None:
+                if orientation == Qt.Orientation.Horizontal:
+                    # return self._SHOW_COLUMNS_IN_TABLE_DICT[str(self._data.columns[section])]
+                    return str(self._data.columns[section])
+                if orientation == Qt.Orientation.Vertical:
+                    return str(self._data.index[section])
+
+    def flags(self, index):
+        """Enable editing of table items."""
+        flags = super(self.__class__, self).flags(index)
+        flags |= Qt.ItemFlag.ItemIsSelectable
+        flags |= Qt.ItemFlag.ItemIsEnabled
+        flags |= Qt.ItemFlag.ItemIsDragEnabled
+        flags |= Qt.ItemFlag.ItemIsDropEnabled
+        return flags
+
+    @property
+    def get_data(self):
+        return self._data
+
+    @property
+    def get_colum_names(self):
+        """Return a list with all columns."""
+        if self._data is not None:
+            return self._data.columns.to_list()
+        else:
+            return None
+
+    @property
+    def get_sample_ids(self):
+        """Return a list with all sample IDs."""
+        if self._data is not None:
+            return self._data['SampleID'].to_list()
+        else:
+            return None
+
+    @property
+    def get_sample_list_tags(self):
+        """Return a list of sample tags with sample IDs and number of detected particles."""
+        if self._data is not None:
+            return (self._data['SampleID'].astype(str) + ': ' + self._data['DetectedParticles'].astype(str)).to_list()
+        else:
+            return None
+
+
diff --git a/lifescale/models/ls_data.py b/lifescale/models/ls_data.py
index f60d18a735a5d31732a21cbc93f02f156ec09537..be9e00e1f0d74e1d567c0bc9368ba7a69deddf2f 100644
--- a/lifescale/models/ls_data.py
+++ b/lifescale/models/ls_data.py
@@ -192,8 +192,12 @@ class LSData:
             raise AssertionError(
                 f'The combination if the values in the columns "Id" and "IntervalNumber" in IntervalAnalysis is not '
                 f'unique!')
+        df_interval_analysis['SampleID'] = df_interval_analysis['Well'] + '-' + df_interval_analysis[
+            'IntervalNumber'].astype(str)
+        df_interval_analysis['keep_min_mass'] = None  # Masses threshold
+        df_interval_analysis['keep_max_mass'] = None  # Masses threshold
 
-            # Settings:
+        # Settings:
         if verbose:
             print(f' - Parse Settings')
         settings_dict = {}
@@ -388,6 +392,8 @@ class LSData:
             columns=df_masses_columns)
         df_masses['Id'] = df_masses['Id'].astype(int)
         df_masses['IntervalNumber'] = df_masses['IntervalNumber'].astype(int)
+        df_masses['SampleID'] = df_masses['Well'] + '-' + df_masses['IntervalNumber'].astype(str)
+        df_masses['keep'] = True
 
         # Sensor:
         # sensor_dict = {}
@@ -450,7 +456,6 @@ class LSData:
         self.df_panel_data.to_csv(filename, index=False)
 
         # Write Masses:
-
         filename = os.path.join(output_filepath, f'Masses_{filename_ending}')
         if verbose:
             print(f'Write Masses to: {filename}')
@@ -467,27 +472,50 @@ class LSData:
             print(f'Write IntervalAnalysis to: {filename}')
         self.df_interval_analysis.to_csv(filename, index=False)
 
-        # TODO: Output format (number of digits)
-        # TODO: Select columns for output (settable as parameter + default settings for each csv file)
-
-    def calc_sample_statistics(self, verbose=True):
+    def calc_sample_statistics(self, verbose=True, selection_only=False):
         """Calculate statistical values for each sample and add it to the self.df_interval_analysis."""
-        if verbose:
+        if verbose & selection_only:
+            print('Calculate sample statistics (selection only).')
+        elif verbose:
             print('Calculate sample statistics.')
 
         for idx, row in self.df_interval_analysis.iterrows():
-            tmp_filter = (self.df_masses['Id'] == row.Id) & (self.df_masses['IntervalNumber'] == row.IntervalNumber)
+            # For all masses in a sample:
+            if not selection_only:
+                tmp_filter = (self.df_masses['Id'] == row.Id) & (self.df_masses['IntervalNumber'] == row.IntervalNumber)
+                tmp_filter_1 = (self.df_interval_analysis['Id'] == row.Id) & \
+                               (self.df_interval_analysis['IntervalNumber'] == row.IntervalNumber)
+                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_median'] = self.df_masses.loc[tmp_filter, 'Mass'].median()
+                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_std'] = self.df_masses.loc[tmp_filter, 'Mass'].std()
+                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q25'] = \
+                    self.df_masses.loc[tmp_filter, 'Mass'].quantile(0.25)
+                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q75'] = \
+                    self.df_masses.loc[tmp_filter, 'Mass'].quantile(0.75)
+                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_iqr'] = \
+                    self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q75'] - \
+                    self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q25']
+                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_rCV'] = \
+                    74.1 * self.df_interval_analysis.loc[tmp_filter_1, 'Mass_iqr'] / \
+                    self.df_interval_analysis.loc[tmp_filter_1, 'Mass_median']
+
+            # For selected items only (flag `keep` = True):
+            tmp_filter = (self.df_masses['Id'] == row.Id) & (self.df_masses['IntervalNumber'] == row.IntervalNumber) & (self.df_masses['keep'])
             tmp_filter_1 = (self.df_interval_analysis['Id'] == row.Id) & \
                            (self.df_interval_analysis['IntervalNumber'] == row.IntervalNumber)
-            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_median'] = self.df_masses.loc[tmp_filter, 'Mass'].median()
-            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_std'] = self.df_masses.loc[tmp_filter, 'Mass'].std()
-            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q25'] = \
+            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_median_keep'] = self.df_masses.loc[tmp_filter, 'Mass'].median()
+            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_mean_keep'] = self.df_masses.loc[tmp_filter, 'Mass'].mean()
+            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_std_keep'] = self.df_masses.loc[tmp_filter, 'Mass'].std()
+            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q25_keep'] = \
                 self.df_masses.loc[tmp_filter, 'Mass'].quantile(0.25)
-            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q75'] = \
+            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q75_keep'] = \
                 self.df_masses.loc[tmp_filter, 'Mass'].quantile(0.75)
-            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_iqr'] = \
-                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q75'] - \
-                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q25']
+            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_iqr_keep'] = \
+                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q75_keep'] - \
+                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_q25_keep']
+            self.df_interval_analysis.loc[tmp_filter_1, 'Mass_rCV_keep'] = \
+                74.1 * self.df_interval_analysis.loc[tmp_filter_1, 'Mass_iqr_keep'] / \
+                self.df_interval_analysis.loc[tmp_filter_1, 'Mass_median_keep']
+            self.df_interval_analysis.loc[tmp_filter_1, 'DetectedParticles_keep'] = len(self.df_masses.loc[tmp_filter, 'Mass'])
 
     @property
     def get_number_of_observations(self):
@@ -513,6 +541,14 @@ class LSData:
         else:
             return 0
 
+    @property
+    def get_sample_ids(self):
+        """Return list of IDs of all samples."""
+        if self.df_interval_analysis is not None:
+            return self.df_interval_analysis['SampleID'].to_list()
+        else:
+            return []
+
     def __str__(self):
         if self.run_name is not None:
             return f'Run "{self.run_name}" with {self.get_number_of_observations} observations in ' \
@@ -520,6 +556,29 @@ class LSData:
         else:
             return f'Not data available yet.'
 
+    def flag_masses(self, min_mass: float, max_mass: float, sample_id: str, verbose=True):
+        """Set the `keep` flag in the masses dataframe according to the data limits (min, max) and sample ID."""
+        tmp_filter = self.df_masses['SampleID'] == sample_id
+        self.df_masses.loc[tmp_filter, 'keep'] = (self.df_masses.loc[tmp_filter, 'Mass'] < max_mass) & (self.df_masses.loc[tmp_filter, 'Mass'] > min_mass)
+        info_string = f'Sample {sample_id}: {len(self.df_masses.loc[~self.df_masses["keep"] & tmp_filter])} out of {len(self.df_masses.loc[tmp_filter])} masses deselected. {len(self.df_masses.loc[self.df_masses["keep"] & tmp_filter])} remaining.'
+
+        # set thresholds in sample dataframe:
+        tmp_filter = self.df_interval_analysis['SampleID'] == sample_id
+        self.df_interval_analysis.loc[tmp_filter, 'keep_max_mass'] = max_mass
+        self.df_interval_analysis.loc[tmp_filter, 'keep_min_mass'] = min_mass
+
+        if verbose:
+            print(info_string)
+        return info_string
+
+    def reset_flag_masses(self, sample_id: str, verbose=True):
+        """Reset alls keep flags in the sample with the ID `sample_id`."""
+        print(sample_id)
+        tmp_filter = self.df_masses['SampleID'] == sample_id
+        self.df_masses.loc[tmp_filter, 'keep'] = True
+        tmp_filter = self.df_interval_analysis['SampleID'] == sample_id
+        self.df_interval_analysis.loc[tmp_filter, 'keep_min_mass'] = None
+        self.df_interval_analysis.loc[tmp_filter, 'keep_max_mass'] = None
 
 def remove_space_from_column_names(df):
     """Removes white space from column names of input dataframe."""
diff --git a/lifescale/models/ls_run.py b/lifescale/models/ls_run.py
deleted file mode 100644
index a90fbe35cdc8241531aee01d12d230388a25db0f..0000000000000000000000000000000000000000
--- a/lifescale/models/ls_run.py
+++ /dev/null
@@ -1,61 +0,0 @@
-"""Modelling a LifeScale run
-
-Copyright (C) 2022  Andreas Hellerschmied <heller182@gmx.at>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <https://www.gnu.org/licenses/>.
-"""
-
-import datetime as dt
-import pytz
-import numpy as np
-import pickle
-import os
-import sys
-
-import pandas as pd
-
-# from gravtools.models.lsm import LSM
-
-
-class LSRun:
-    """LifeScale run object.
-
-    A LS run contains:
-
-
-    - run name and description
-    - input data
-    - settings
-
-    Attributes
-    ----------
-    run_name : str
-        Name of the lsm run.
-    output_directory : str
-        Path to output directory (all output files are stored there).
-    pgm_version : str
-        Version of the program.
-    """
-
-    def __init__(self,
-                 campaign_name,
-                 output_directory,
-                 surveys=None,  # Always use non-mutable default arguments!
-                 stations=None,  # Always use non-mutable default arguments!
-                 lsm_runs=None,  # Always use non-mutable default arguments!
-                 ref_delta_t_dt=None  # Reference time for drift determination
-                 ):
-        """
-        Parameters
-        """
\ No newline at end of file
diff --git a/makefile b/makefile
index 50604b59aac78b45ba9a97620a3214e50df003c5..315bbd86b2cac8925ea4f9c078e8b8e124086671 100644
--- a/makefile
+++ b/makefile
@@ -12,6 +12,12 @@ init:
 # Convert *.ui files from Qt Designer to Python files:
 py_gui:
 	pyuic6 -o lifescale/gui/MainWindow.py lifescale/gui/MainWindow.ui
+	pyuic6 -o lifescale/gui/dialog_about.py lifescale/gui/dialog_about.ui
+
+# Convert QT resources to a python file using rcc of PySide2:
+#  - PyQt >= 6.3.1 is required!
+py_gui_resources:
+	rcc -g python lifescale/gui/resources.qrc | sed '0,/PySide2/s//PyQt6/' > lifescale/gui/resources.py
 
 # Package test (install in current virtual environment, editable install with pip)
 test_pack:
diff --git a/setup.cfg b/setup.cfg
index 5cb308073936bf00b7166d0d1f735ff6878304e2..e0e2aa28c63cd07fd4fac85ed37ace55ec64166c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -23,13 +23,16 @@ install_requires =
     numpy
     pandas
     openpyxl
+    PyQt6
+    pyqtgraph
 
 [options.entry_points]
 console_scripts =
     ls2csv = lifescale.command_line.command_line:ls2csv
+    lsgui = lifescale.command_line.command_line:lsgui
 
-[options.packages.find]
-exclude =
-    lifescale.gui*
-    lifescale.scripts.run_gui.py
-    lifescale.models.ls_run.py
+# [options.packages.find]
+# exclude =
+#     lifescale.gui*
+#     lifescale.scripts.run_gui.py
+#     lifescale.models.ls_run.py