update

csst_ifs_sim/csst_ifs_sim.py

@@ -2800,7 +2800,7 @@ class IFSsimulator():
                   or self.information['bias2_r'] > 2000 or self.information['bias2_r'] < 100
                   or self.information['bias3_r'] > 2000 or self.information['bias3_r'] < 100
                   or self.information['bias4_r'] > 2000 or self.information['bias4_r'] < 100)
-                  
+
         if checkV:
             self.log.error(
                 'bias value error, it shoub be in [100, 2000]!')