code/data/test/sample_byCols.csv

   1 FK_CCU_ID,CPP_DATE_PUISSANCE,CPP_PUISSANCE_CORRIGEE,CPP_PUISSANCE_BRUTE
   2 12301,12JAN2009:00:30:00,,23.051
   3 12301,12JAN2009:01:00:00,,33.052
   4 12301,12JAN2009:01:30:00,32.32,43.053
   5 50000,23MAR2009:00:30:00,,150.321
   6 50000,23MAR2009:01:00:00,,160.322
   7 50000,23MAR2009:01:30:00,11.1,140.323
   8 1313,30MAY2009:10:30:00,10.0,50.05
   9 1313,30MAY2009:11:00:00,,51.05
  10 1313,30MAY2009:11:30:00,,52.05
  11 6300,20JUL2009:08:30:00,,500.30
  12 6300,20JUL2009:09:00:00,,501.31
  13 6300,20JUL2009:09:30:00,1.001,502.32