diff --git a/func/Module_approximately_align.py b/func/Module_approximately_align.py
index 0c85386..e585dd2 100644
--- a/func/Module_approximately_align.py
+++ b/func/Module_approximately_align.py
@@ -896,10 +896,16 @@ class MainWindow_approximately_align(QMainWindow):
 
             ax1 = self.fig.add_subplot(211)
             ax1.scatter(linspace(epoch_min, epoch_max, len(tho_bias_list)), tho_bias_list,  alpha=0.2)
+            ax1.axhline(y=0, color='red', linestyle='--', alpha=0.3)
+            ax1.set_xlabel("Epoch")
+            ax1.set_ylabel("Tho Bias / s")
             ax1.set_title("THO")
 
             ax2 = self.fig.add_subplot(212)
             ax2.scatter(linspace(epoch_min, epoch_max, len(abd_bias_list)), abd_bias_list, alpha=0.2)
+            ax2.axhline(y=0, color='red', linestyle='--', alpha=0.3)
+            ax2.set_xlabel("Epoch")
+            ax2.set_ylabel("Abd Bias / s")
             ax2.set_title("ABD")
             self.fig.canvas.draw()
 
@@ -922,8 +928,7 @@ class Data:
         self.processed_downsample_orgBcg = None
         self.processed_downsample_Tho = None
         self.processed_downsample_Abd = None
-        self.relate_list = None
-        self.relate_point = None
+
 
     def open_file(self):
         if Path(Config["Path"]["Input_orgBcg"]).is_file():