auto_tests/data/out-of-order-dates.csv

   1 Date,r17,r82,r83,r9
   2 2013-10-17T21:00:00Z,,,,9
   3 2014-05-29T18:00:00Z,,,,9
   4 2013-10-17T21:00:00Z,17,,,
   5 2014-05-29T17:00:00Z,17,,,
   6 2014-05-29T18:00:00Z,,82,,
   7 2014-05-29T18:00:00Z,,,83,
   8 2014-10-11T04:00:00Z,,,83,
   9 2015-05-22T04:00:00Z,,82,,