my mistake, the original format was a csv file:
Date and Time,Number,Total I/O /sec,Reads/Sec
08 09 2007 18:00:00,00:00,2.2733333,0
08 09 2007 18:00:00,00:01,0.033333335,123
08 09 2007 18:00:00,00:02,0.036666665,65
08 09 2007 18:00:00,00:03,1.1433333,34
08 09 2007 18:00:00,00:04,0,34
so will...