diff --git a/sensospot_data/columns.py b/sensospot_data/columns.py
index b35ade8..9c251ee 100644
--- a/sensospot_data/columns.py
+++ b/sensospot_data/columns.py
@@ -49,7 +49,7 @@ RAW_DATA_COLUMN_SET = {
     COL_NAME_SPOT_STDDEV,
     COL_NAME_BKG_SUM,
     COL_NAME_SPOT_SUM,
-    COL_NAME_BKG_AREA ,
+    COL_NAME_BKG_AREA,
     COL_NAME_SPOT_AREA,
     COL_NAME_SPOT_SAT,
     COL_NAME_POS_NOM_X,
@@ -61,7 +61,7 @@ RAW_DATA_COLUMN_SET = {
     COL_NAME_WELL_COLUMN,
     COL_NAME_PARAMETERS_CHANNEL,
     COL_NAME_PARAMETERS_TIME,
-    COL_NAME_EXPOSURE_ID
+    COL_NAME_EXPOSURE_ID,
 }
 
 
diff --git a/sensospot_data/parser.py b/sensospot_data/parser.py
index b5847c3..6c4ed61 100755
--- a/sensospot_data/parser.py
+++ b/sensospot_data/parser.py
@@ -13,10 +13,10 @@ from .columns import (
     COL_NAME_POS_ID,
     COL_NAME_WELL_ROW,
     COL_NAME_SPOT_FOUND,
+    RAW_DATA_COLUMN_SET,
     COL_NAME_EXPOSURE_ID,
     COL_NAME_WELL_COLUMN,
     COL_NAME_SPOT_DIAMETER,
-    RAW_DATA_COLUMN_SET
 )
 from .parameters import add_optional_measurement_parameters
 
@@ -80,7 +80,7 @@ def _extract_measurement_info(data_file):
 
 def _cleanup_data_columns(data_frame):
     """ renames some data columns for consistency and drops unused columns """
-    renamed = data_frame.rename(columns=COLUMNS_RENAME_MAP)    
+    renamed = data_frame.rename(columns=COLUMNS_RENAME_MAP)
     surplus_columns = set(renamed.columns) - RAW_DATA_COLUMN_SET
     return renamed.drop(columns=surplus_columns)