diff --git a/View/acoustic_data_tab.py b/View/acoustic_data_tab.py
index 32724d7..2b2be51 100644
--- a/View/acoustic_data_tab.py
+++ b/View/acoustic_data_tab.py
@@ -2314,83 +2314,41 @@ class AcousticDataTab(QWidget):
         ''' rmin and rmax are updated with double slider of depth '''
         data_id = self.fileListWidget.currentRow()
 
-        stg.rmin[data_id] = ((
-            np.where(
-                np.abs(
-                    np.round(
-                        stg.depth[data_id][0, :], 2
-                    ) - float(
-                        "".join(
-                            findall(
-                                "[.0-9]",
-                                self.lineEdit_depth_max_limits.text()
-                            )
-                        )
-                    )
-                ) == np.nanmin(
-                    np.abs(
-                        np.round(stg.depth[data_id][0, :], 2)
-                        - float(
-                            "".join(
-                                findall(
-                                    "[.0-9]",
-                                    self.lineEdit_depth_max_limits.text()
-                                )
-                            )
-                        )
-                    )
-                )
-            )[0][0]+1,
-            float(
-                "".join(
-                    findall(
-                        "[.0-9]",
-                        self.lineEdit_depth_max_limits.text()
-                    )
+        round_depth = np.round(stg.depth[data_id][0, :], 2)
+        depth_max = float(
+            "".join(
+                findall(
+                    "[.0-9]",
+                    self.lineEdit_depth_max_limits.text()
                 )
             )
+        )
+        depth_min = float(
+            "".join(
+                findall(
+                    "[.0-9]",
+                    self.lineEdit_depth_min_limits.text()
+                )
+            )
+        )
+
+        diff_max = np.abs(round_depth - depth_max)
+        diff_min = np.abs(round_depth - depth_min)
+
+        stg.rmin[data_id] = ((
+            np.where(diff_max == np.nanmin(diff_max))[0][0]+1,
+            depth_max
         ))
 
         stg.rmax[data_id] = ((
-            np.where(
-                np.abs(
-                    np.round(
-                        stg.depth[data_id][0, :], 2
-                    ) - float(
-                        "".join(
-                            findall(
-                                "[.0-9]",
-                                self.lineEdit_depth_min_limits.text()
-                            )
-                        )
-                    )
-                ) == np.nanmin(
-                    np.abs(
-                        np.round(stg.depth[data_id][0, :], 2)
-                        - float(
-                            "".join(
-                                findall(
-                                    "[.0-9]",
-                                    self.lineEdit_depth_min_limits.text()
-                                )
-                            )
-                        )
-                    )
-                )
-            )[0][0],
-            float(
-                "".join(
-                    findall(
-                        "[.0-9]",
-                        self.lineEdit_depth_min_limits.text()
-                    )
-                )
-            )
+            np.where(diff_min == np.nanmin(diff_min))[0][0],
+            depth_min
         ))
 
         stg.depth_cross_section[data_id] = (
-            stg.depth[data_id][:,
-            stg.rmin[data_id][0]:stg.rmax[data_id][0]]
+            stg.depth[data_id][
+                :, stg.rmin[data_id][0]:stg.rmax[data_id][0]
+            ]
         )
 
     def compute_BS_cross_section(self):