diff --git a/ETA.py b/ETA.py
index 885a91e..84f5618 100755
--- a/ETA.py
+++ b/ETA.py
@@ -551,6 +551,7 @@ if calibration != None:
                 calibrations[ 'top' ][ 'x' ][ 'min' ] + list_same[0]
             ]
             i += len( list_same )
+
     calibrations[  'top' ][ 'x' ][ 'max' ] -= padding
     calibrations[ 'down' ][ 'x' ][ 'max' ] -= padding
     border[ 'x' ][ 'max' ]                 -= padding
@@ -596,8 +597,8 @@ bias = {
     ),
     'down': np.mean(
         data[
-            calibrations[ 'down' ][ 'y' ][ 'max' ]      :
-            calibrations[ 'down' ][ 'y' ][ 'max' ] + 100,
+            calibrations[ 'down' ][ 'y' ][ 'min' ] - 100:
+            calibrations[ 'down' ][ 'y' ][ 'min' ]      ,
             calibrations[ 'down' ][ 'x' ][ 'min' ]      :
             calibrations[ 'down' ][ 'x' ][ 'max' ]
         ]       ,