diff --git a/Scripts/datahandling/resultdata.py b/Scripts/datahandling/resultdata.py
index 37e4d786..3f9dbdcc 100644
--- a/Scripts/datahandling/resultdata.py
+++ b/Scripts/datahandling/resultdata.py
@@ -27,9 +27,13 @@ def flush(self):
                     f.write(row)
         self._list_buffer = {}
         for filename in self._df_buffer:
-            self._df_buffer[filename].to_csv(
+            df = self._df_buffer[filename]
+            df.index = df.index.astype(str, copy=False)
+            # Pad index according to its longest item
+            df.index = df.index.str.pad(len(max(df.index, key=len)))
+            df.to_csv(
                 os.path.join(self.path, filename),
-                sep='\t', float_format="%1.5f")
+                sep='\t', na_rep=12*' ', float_format="%12.7g")
         self._df_buffer = {}
         for filename in self._xlsx_buffer:
             self._xlsx_buffer[filename].save(
@@ -48,6 +52,7 @@ def print_data(self, data, filename, colname):
         colname : str
             Desired name of this column
         """
+        colname = colname.rjust(12)
         if filename not in self._df_buffer:
             self._df_buffer[filename] = pandas.DataFrame(data, columns=[colname])
         else:
@@ -74,7 +79,7 @@ def print_matrix(self, data, filename, sheetname):
             # If no Workbook module available (= _use_txt), save data to csv
             data.to_csv(
                 os.path.join(self.path, "{}_{}.txt".format(filename, sheetname)),
-                sep='\t', float_format="%8.1f")
+                sep='\t', float_format="%12.7g")
         else:
             # Get/create new worksheet
             if filename in self._xlsx_buffer: