diff --git a/Model/calibration_constant_kt.py b/Model/calibration_constant_kt.py
index 4f3c00c..02844bb 100644
--- a/Model/calibration_constant_kt.py
+++ b/Model/calibration_constant_kt.py
@@ -21,18 +21,17 @@
 
 import os
 import pandas as pd
-from PyQt5.QtWidgets import (QWidget, QVBoxLayout, QDialog, QTabWidget, QGridLayout, QScrollArea,
-                             QFileDialog, QMessageBox, QLabel)
+from PyQt5.QtWidgets import (
+    QWidget, QVBoxLayout, QDialog, QTabWidget, QGridLayout,
+    QScrollArea, QFileDialog, QMessageBox, QLabel
+)
 from PyQt5.QtCore import Qt
 
 class CalibrationConstantKt(QDialog):
-
     def __init__(self, parent=None):
-
         super(CalibrationConstantKt, self).__init__(parent)
 
         self.setGeometry(400, 200, 300, 400)
-
         self.setWindowTitle("Calibration constant kt")
 
         self.verticalLayout_Main = QVBoxLayout()
@@ -41,15 +40,18 @@ class CalibrationConstantKt(QDialog):
         self.verticalLayout_Main.addWidget(self.tab)
 
         try:
-            self.data_ABS = pd.read_excel("ABS_calibration_constant_kt.xlsx", header=0, sheet_name=None)
-
+            self.data_ABS = pd.read_excel(
+                "ABS_calibration_constant_kt.xlsx",
+                header=0, sheet_name=None
+            )
         except FileNotFoundError as e:
-
             msgBox = QMessageBox()
             msgBox.setWindowTitle("File Not Found Error")
             msgBox.setIcon(QMessageBox.Warning)
-            msgBox.setText("Please check Excel file name for the calibration constant kt \n"
-                           "It should be an excel file named : 'ABS_calibration_constant_kt.xlsx'")
+            msgBox.setText(
+                "Please check Excel file name for the calibration constant kt \n"
+                "It should be an excel file named : 'ABS_calibration_constant_kt.xlsx'"
+            )
             msgBox.setStandardButtons(QMessageBox.Ok)
             msgBox.exec()
 
@@ -57,9 +59,11 @@ class CalibrationConstantKt(QDialog):
         self.load_freq_and_kt_values()
 
     def open_dialog_box(self):
-        filename = QFileDialog.getOpenFileNames(self, "Calibration file", "", "Calibration file (*.xlsx)",
-                                                options=QFileDialog.DontUseNativeDialog)
-        print(filename)
+        filename = QFileDialog.getOpenFileNames(
+            self, "Calibration file", "", "Calibration file (*.xlsx)",
+            options=QFileDialog.DontUseNativeDialog
+        )
+
         dir_name = os.path.dirname(filename[0][0])
         file_name = os.path.basename(filename[0][0])
         print(f"dir name : {dir_name} & file name : {file_name}")
@@ -71,43 +75,58 @@ class CalibrationConstantKt(QDialog):
         self.load_freq_and_kt_values()
 
     def load_freq_and_kt_values(self):
-
         for t in range(len(self.data_ABS.keys())):
             self.tab.removeTab(t)
 
         for t_index, t_value in enumerate(list(self.data_ABS.keys())):
+            tab_calib = QWidget()
+            self.tab.addTab(tab_calib, t_value)
 
-            exec("self.tab_calib_" + str(t_index) + "= QWidget()")
-            eval("self.tab.addTab(self.tab_calib_" + str(t_index) + ", '" + str(t_value) + "')")
+            verticalLayout = QVBoxLayout(tab_calib)
 
-            exec("self.verticalLayout_tab_" + str(t_index) + "= QVBoxLayout(self.tab_calib_" + str(t_index) + ")")
+            scrollarea = QScrollArea(tab_calib)
+            scrollarea.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOn)
+            scrollarea.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
+            scrollarea.setWidgetResizable(True)
 
-            exec("self.scrollarea_tab_" + str(t_index) + " = QScrollArea(self.tab_calib_" + str(t_index) + ")")
-            eval("self.scrollarea_tab_" + str(t_index) + ".setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOn)")
-            eval("self.scrollarea_tab_" + str(t_index) + ".setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)")
-            eval("self.scrollarea_tab_" + str(t_index) + ".setWidgetResizable(True)")
+            verticalLayout.addWidget(scrollarea)
+            gridLayout = QGridLayout(scrollarea)
 
-            eval("self.verticalLayout_tab_" + str(t_index) + ".addWidget(self.scrollarea_tab_" + str(t_index) + ")")
-
-            exec("self.gridLayout_tab_" + str(t_index) + " = QGridLayout(self.scrollarea_tab_" + str(t_index) + ")")
             if [*self.data_ABS.values()][t_index].columns.any():
-                exec("self.label_freq_" + str(t_index) + " = QLabel('" + str([*self.data_ABS.values()][t_index].columns[0]) + " (MHz)')")
-                exec("self.label_kt_" + str(t_index) + " = QLabel('" + str([*self.data_ABS.values()][t_index].columns[1]) + " (V.m<sup>1.5</sup>)')")
+                label_freq = QLabel(
+                    f"{[*self.data_ABS.values()][t_index].columns[0]} (MHz)"
+                )
+                label_kt = QLabel(
+                    f"{[*self.data_ABS.values()][t_index].columns[1]} "
+                    + "(V.m<sup>1.5</sup>)"
+                )
             else:
-                exec("self.label_freq_" + str(t_index) + " = QLabel('Frequency (MHz)')")
-                exec("self.label_kt_" + str(t_index) + " = QLabel('kt (V.m<sup>1.5</sup>)')")
-            eval("self.gridLayout_tab_" + str(t_index) + ".addWidget(self.label_freq_" + str(t_index) + ", 0, 0, 1, 1, Qt.AlignCenter)")
-            eval("self.gridLayout_tab_" + str(t_index) + ".addWidget(self.label_kt_" + str(t_index) + ", 0, 1, 1, 1, Qt.AlignCenter)")
+                label_freq = QLabel('Frequency (MHz)')
+                label_kt = QLabel('kt (V.m<sup>1.5</sup>)')
+
+            gridLayout.addWidget(
+                label_freq, 0, 0, 1, 1, Qt.AlignCenter
+            )
+            gridLayout.addWidget(
+                label_kt, 0, 1, 1, 1, Qt.AlignCenter
+            )
 
             for x in range(self.data_ABS[t_value].shape[0]):
-                exec("self.label_freq_" + str(x) + "_ABS_" + str(t_index) + " = QLabel()")
-                # print(eval("self.label_freq_" + str(x) + "_ABS_" + str(t_index) + ".setText('" + str(self.data_ABS[t_value].iloc[x][0]*1e-6) + " MHz')"))
-                eval("self.label_freq_" + str(x) + "_ABS_" + str(t_index) + ".setText('" + str(self.data_ABS[t_value].iloc[x][0]*1e-6) + " (MHz)')")
-                # eval("self.label_freq_" + str(x) + "_ABS_" + str(t_index) + ".setDisabled(True)")
-                eval("self.gridLayout_tab_" + str(t_index) + ".addWidget(self.label_freq_" + str(x) + "_ABS_" + str(t_index) +
-                     ", " + str(x + 1) + ", 0, 1, 1,Qt.AlignCenter)")
-                exec("self.label_kt_" + str(x) + "_ABS_" + str(t_index) + " = QLabel()")
-                exec("self.label_kt_" + str(x) + "_ABS_" + str(t_index) + ".setText('" + str(self.data_ABS[t_value].iloc[x][1]) + "V.m<sup>1.5</sup>')")
-                eval("self.label_kt_" + str(x) + "_ABS_" + str(t_index) + ".setStyleSheet('border: 1px solid black;')")
-                eval("self.gridLayout_tab_" + str(t_index) + ".addWidget(self.label_kt_" + str(x) + "_ABS_" + str(t_index) +
-                     ", " + str(x+1) + ", 1, 1, 1, Qt.AlignCenter)")
+                label_freq_ABS = QLabel()
+
+                label_freq_ABS.setText(
+                    f"{self.data_ABS[t_value].iloc[x][0]*1e-6}" + "(MHz)"
+                )
+                gridLayout.addWidget(
+                    label_freq_ABS, x + 1, 0, 1, 1,Qt.AlignCenter
+                )
+
+                label_kt_ABS = QLabel()
+
+                label_kt_ABS.setText(
+                    f"{self.data_ABS[t_value].iloc[x][1]} V.m<sup>1.5</sup>"
+                )
+                label_kt_ABS.setStyleSheet('border: 1px solid black;')
+                gridLayout.addWidget(
+                    label_kt_ABS, x + 1 , 1, 1, 1, Qt.AlignCenter
+                )