diff --git a/rowers/dataprep.py b/rowers/dataprep.py
index d3e8c4ac..36279dc8 100644
--- a/rowers/dataprep.py
+++ b/rowers/dataprep.py
@@ -511,6 +511,7 @@ def clean_df_stats(datadf, workstrokesonly=True, ignorehr=True,
                    ignoreadvanced=False):
     # clean data remove zeros and negative values
     before = len(datadf)
+    print(datadf.info())
 
     data_orig = datadf.copy()
 
@@ -751,9 +752,11 @@ def clean_df_stats(datadf, workstrokesonly=True, ignorehr=True,
     after = len(datadf.dropna())
     ratio = float(after)/float(before)
 
-    if ratio < 0.001 or after < 2:
+    if ratio < 0.01 or after < 2:
         return data_orig
 
+    print(datadf.info())
+    print(ratio,after)
     return datadf
 
 def getpartofday(row,r):