Charting all my Fuel Ups weird behaviour!
 

When I try to "chart all my Fuel ups" I just see a straight line displayed! When I began adding all of my 160+ Fuel-Ups from over the past 3 years a couple of days ago, I saw a graph which is what I expected, but as I filled in all the data from the past 3 years, I now see a straight line. Anyone have any ideas as to what might be wrong? Thanks in advance!

Found it!
 

Bad data! One of the entries had date-year of 1016 (duh!) I feel such a dumbo! Sorry guys!