diff --git a/View/plot_noise_window.py b/View/plot_noise_window.py
index 37cbc67..e47b96b 100644
--- a/View/plot_noise_window.py
+++ b/View/plot_noise_window.py
@@ -1,7 +1,10 @@
 
 from PyQt5.QtGui import QIcon, QPixmap
-from PyQt5.QtWidgets import (QWidget, QLabel, QHBoxLayout, QVBoxLayout, QApplication, QMainWindow, QGridLayout,
-                             QDialog, QFrame, QTabWidget, QScrollArea)
+from PyQt5.QtWidgets import (
+    QWidget, QLabel, QHBoxLayout, QVBoxLayout, QApplication,
+    QMainWindow, QGridLayout, QDialog, QFrame, QTabWidget,
+    QScrollArea
+)
 
 import numpy as np
 
@@ -14,9 +17,7 @@ import settings as stg
 
 
 class PlotNoiseWindow(QDialog):
-
     def __init__(self, parent=None):
-
         super(PlotNoiseWindow, self).__init__(parent)
 
         self.setGeometry(400, 200, 700, 500)
@@ -29,65 +30,60 @@ class PlotNoiseWindow(QDialog):
         self.tab = QTabWidget()
         self.verticalLayout_Main.addWidget(self.tab)
 
+        self.tabs = []
+
         for i in range(len(stg.filename_BS_raw_data)):
+            self.tabs.append(QWidget())
 
-            exec("self.tab" + str(i) + "= QWidget()")
-            exec("self.tab.addTab(self.tab" + str(i) + ", stg.filename_BS_raw_data[" + str(i) + "])")
+            self.tab.addTab(self.tabs[i], stg.filename_BS_raw_data[i])
 
-            exec("self.verticalLayout_tab" + str(i) + "= QVBoxLayout()")
-            exec("self.tab" + str(i) + ".setLayout(self.verticalLayout_tab" + str(i) + ")")
+            verticalLayout = QVBoxLayout()
+            self.tabs[i].setLayout(verticalLayout)
 
-            exec("self.fig" + str(i) + ", self.ax" + str(i) +
-                 "= plt.subplots(nrows=stg.freq[" + str(i) + "].shape[0], ncols=1, layout='constrained')")
+            fig, ax = plt.subplots(
+                nrows=stg.freq[i].shape[0], ncols=1, layout='constrained'
+            )
 
             if stg.BS_noise_raw_data[i].shape != (0,):
-
                 for freq_ind, freq_val in enumerate(stg.freq[i]):
-
-                    eval("self.ax" + str(i) + "[" + str(freq_ind) + "]" + ".cla()")
+                    ax[freq_ind].cla()
 
                     val_min = np.nanmin(stg.BS_noise_raw_data[i][freq_ind, :, :])
                     val_max = np.nanmax(stg.BS_noise_raw_data[i][freq_ind, :, :])
 
-                    if val_min == val_max:
-                        exec("pcm = self.ax" + str(i) + "[" + str(freq_ind) + "]" + ".pcolormesh(" +
-                             "stg.time_noise[" + str(i) + "][" + str(freq_ind) + ", :]," +
-                             "-stg.depth_noise[" + str(i) + "][" + str(freq_ind) + ", :]," +
-                             "stg.BS_noise_raw_data[" + str(i) + "][" + str(freq_ind) + ", :, :]," +
-                             "cmap='hsv')")
-                    else:
+                    if val_min != val_max:
                         val_min = 0
                         val_max = 1e-5
-                        exec("pcm = self.ax" + str(i) + "[" + str(freq_ind) + "]" + ".pcolormesh(" +
-                             "stg.time_noise[" + str(i) + "][" + str(freq_ind) + ", :]," +
-                             "-stg.depth_noise[" + str(i) + "][" + str(freq_ind) + ", :]," +
-                             "stg.BS_noise_raw_data[" + str(i) + "][" + str(freq_ind) + ", :, :]," +
-                             "cmap='hsv')")
 
-                    eval("self.ax" + str(i) + "[" + str(freq_ind) + "]" + ".text(1, .70, stg.freq_text[" + str(i) +
-                                        "][" + str(freq_ind) + "]," +
-                                      "fontsize=10, fontweight='bold', fontname='DejaVu Sans', c='black', alpha=0.5," +
-                                      "horizontalalignment='right', verticalalignment='bottom'," +
-                                      "transform=self.ax" + str(i) + "[" + str(freq_ind) + "].transAxes)")
+                    pcm = ax[freq_ind].pcolormesh(
+                        stg.time_noise[i][freq_ind, :],
+                        -stg.depth_noise[i][freq_ind, :],
+                        stg.BS_noise_raw_data[i][freq_ind, :, :],
+                        cmap='hsv'
+                    )
 
-                exec("self.fig" + str(i) + ".supxlabel('Time (sec)', fontsize=10)")
-                exec("self.fig" + str(i) + ".supylabel('Depth (m)', fontsize=10)")
+                    ax[freq_ind].text(
+                        1, .70, stg.freq_text[i][freq_ind],
+                        fontsize=10, fontweight='bold',
+                        fontname='DejaVu Sans', c='black', alpha=0.5,
+                        horizontalalignment='right', verticalalignment='bottom',
+                        transform=ax[freq_ind].transAxes
+                    )
 
-                exec("cbar = self.fig" + str(i) + ".colorbar(pcm, ax=self.ax" + str(i) + "[:] ," +
-                                                                "shrink=1, location='right')")
-                eval("cbar.set_label(label='Noise signal (V)', rotation=270, labelpad=8)")
+                fig.supxlabel('Time (sec)', fontsize=10)
+                fig.supylabel('Depth (m)', fontsize=10)
 
-                exec("self.fig" + str(i) + ".canvas.draw_idle()")
+                cbar = fig.colorbar(
+                    pcm, ax=ax[:], shrink=1, location='right'
+                )
+                cbar.set_label(label='Noise signal (V)', rotation=270, labelpad=8)
+                fig.canvas.draw_idle()
 
-            else:
+            canvas = FigureCanvas(fig)
+            toolbar = NavigationToolBar(canvas, self)
 
-                pass
+            scroll = QScrollArea()
+            scroll.setWidget(canvas)
 
-            exec("self.canvas" + str(i) + "= FigureCanvas(self.fig" + str(i) + ")")
-            exec("self.toolbar" + str(i) + "= NavigationToolBar(self.canvas" + str(i) + ", self)")
-
-            exec("self.scroll" + str(i) + "= QScrollArea()")
-            exec("self.scroll" + str(i) + ".setWidget(self.canvas" + str(i) + ")")
-
-            exec("self.verticalLayout_tab" + str(i) + ".addWidget(self.toolbar" + str(i) + ")")
-            exec("self.verticalLayout_tab" + str(i) + ".addWidget(self.scroll" + str(i) + ")")
+            verticalLayout.addWidget(toolbar)
+            verticalLayout.addWidget(scroll)