diff --git a/View/sediment_calibration_tab.py b/View/sediment_calibration_tab.py
index 6aa9227..658e135 100644
--- a/View/sediment_calibration_tab.py
+++ b/View/sediment_calibration_tab.py
@@ -87,11 +87,13 @@ class SedimentCalibrationTab(QWidget):
 
         # 1O units is 100% , 1 units is 10%
         self.horizontalLayoutTop = QHBoxLayout()
-        self.verticalLayoutMain.addLayout(self.horizontalLayoutTop, 5)
+        self.verticalLayoutMain.addLayout(self.horizontalLayoutTop, 5)         # 1O units is 100% , 1 units is 10%
 
         self.horizontalLayoutBottom = QHBoxLayout()
         self.verticalLayoutMain.addLayout(self.horizontalLayoutBottom, 5)
 
+        # --------------------------------------------------------------------------------------------------------------
+
         self.groupbox_acoustic_data = QGroupBox()
         self.horizontalLayoutTop.addWidget(self.groupbox_acoustic_data, 6)
 
@@ -118,6 +120,7 @@ class SedimentCalibrationTab(QWidget):
         self.groupbox_data_plot = QGroupBox()
         self.horizontalLayout_groupbox_acoustic_data.addWidget(self.groupbox_data_plot, 7)
 
+        # --- Groupbox data choice ---
         self.verticalLayout_groupbox_data_choice = QVBoxLayout(self.groupbox_data_choice)
 
         self._setup_widgets_acoustic_data_1()
@@ -347,6 +350,9 @@ class SedimentCalibrationTab(QWidget):
         self.groupbox_FCB = QGroupBox()
         self.horizontalLayoutBottom.addWidget(self.groupbox_FCB, 6)
 
+        # +++++++++++++++++++++++++++++++++++++
+        # +++ Groupbox sediment calibration +++
+
         self.groupbox_sediment_calibration.setTitle("Step 3 : Compute Calibration")
         self.verticalLayout_groupbox_sediment_calibration = QVBoxLayout(self.groupbox_sediment_calibration)
 
@@ -1911,9 +1917,6 @@ class SedimentCalibrationTab(QWidget):
                                     axis=1))
 
     def function_pushbutton_compute_calibration(self):
-        if len(stg.sand_sample_target_indice) == 0:
-            self._data_validity_message_box()
-            return
 
         self.label_temperature.clear()
         self.label_temperature.setText("T = " + str(stg.temperature) + " °C")
@@ -1928,6 +1931,8 @@ class SedimentCalibrationTab(QWidget):
         self.compute_zeta()
 
     def compute_ks(self):
+
+        # --- Compute ks ---
         psd_number_of_particles = (
             self.inv_hc.compute_particle_size_distribution_in_number_of_particles(
                 num_sample=stg.sand_sample_target[0][1],
@@ -2742,3 +2747,4 @@ class SedimentCalibrationTab(QWidget):
             self.lineEdit_slider_FCB.setText(
                 str(stg.time[self.combobox_acoustic_data_choice.currentIndex()][
                         self.combobox_frequency_FCB.currentIndex(), self.slider_FCB.value()-1]))
+
diff --git a/View/signal_processing_tab.py b/View/signal_processing_tab.py
index f5933ec..95288ab 100644
--- a/View/signal_processing_tab.py
+++ b/View/signal_processing_tab.py
@@ -647,6 +647,9 @@ class SignalProcessingTab(QWidget):
         stg.BS_mean[self.combobox_acoustic_data_choice.currentIndex()] = (
                 np.nanmean(stg.BS_raw_data[self.combobox_acoustic_data_choice.currentIndex()][:, :, val1:val2], axis=2))
 
+        if stg.BS_noise_raw_data[self.combobox_acoustic_data_choice.currentIndex()].shape != (0,):
+            self.compute_noise_from_profile_tail_value()
+
     def plot_averaged_profile_tail(self):
 
         # --- Plot averaged signal ---
@@ -932,7 +935,7 @@ class SignalProcessingTab(QWidget):
         # --- Compute noise from value and compute SNR ---
 
         if stg.BS_stream_bed[self.combobox_acoustic_data_choice.currentIndex()].shape != (0,):
-
+            stg.BS_noise_raw_data[self.combobox_acoustic_data_choice.currentIndex()] = np.array([])
             stg.BS_noise_raw_data[self.combobox_acoustic_data_choice.currentIndex()] = (
                 np.full(stg.BS_stream_bed[self.combobox_acoustic_data_choice.currentIndex()].shape,
                         float(self.lineEdit_profile_tail_value.text().replace(",", "."))))
@@ -992,7 +995,7 @@ class SignalProcessingTab(QWidget):
         self.plot_pre_processed_BS_signal()
         self.plot_pre_processed_profile()
 
-        self.activate_list_of_pre_processed_data()
+        # self.activate_list_of_pre_processed_data()
 
     def plot_noise(self):
         self.horizontalLayout_groupbox_plot_noise_data.removeWidget(self.canvas_noise)
diff --git a/main.py b/main.py
index e747805..caca3fb 100644
--- a/main.py
+++ b/main.py
@@ -33,7 +33,8 @@ logging.basicConfig(
 )
 
 logger = logging.getLogger()
-logger.setLevel(logging.DEBUG)
+# logger.setLevel(logging.DEBUG)
+logger.setLevel(logging.INFO)
 
 class MainApplication(QMainWindow):
 
@@ -53,7 +54,6 @@ class MainApplication(QMainWindow):
             # -------------- Acoustic data tab ---------------
 
             self.acoustic_data_tab = AcousticDataTab(self.ui_mainwindow.tab1)
-            print("0 AcousticDataTab ", id(AcousticDataTab))
 
             self.acoustic_data_tab\
                 .combobox_ABS_system_choice\