Handicap Calculation for Rick Burnham for Week 19

Week of Rounds Used:		18	17	14	13	11		Total		Average		90%		Rounded to:
Gross Score:		46	50	43	45	47		231		46.20
Hdcp Score (over Par):		11	15	7	10	10		53		10.60		9.54		10

What does this mean? How are handicaps calculated?
Handicap Projection for Rick Burnham for Week 20

If your next round score is:		Your new Handicap will be:
34-39		8
40-44		9
45-50		10
51-55		11
56-61		12