maand   17 dagen 40.75 uur
January 03  1 2
February 04  1 2
March 15 23 24  3 7.5
April 05 09 19  3 8
June 01 15  2 5.5
July 04 06  2 4.25
September 08 09 10 28  4 8.75
October 01  1 2.75