JQuery Plugin: Tablesorter

JQuery Plugin: Tablesorter

Hi,

I have table and it sorts time. In my case its working totally wrong.

Happening:                               Time ( Hours, Minutes, Seconds ) -> Sorting fastest first
1st run                                   1.15.20        <<------- It should be last, since it took more time than others
3rd  run                                     30.50        <-------- It should be first, fastest run
2nd run                                     42.30
4th run                                      56.25

Im new at this and have no clue how to code it..
As I am sorting time ' Fastest first ' --> Hours should be located at last..

Plugin site at: http://tablesorter.com/docs/index.html (if needed)