Handicap Calculation for Mike Neri for Week 19

Week of Rounds Used:		15	14	13	12	10		Total		Average		90%		Rounded to:
Gross Score:		46	49	57	53	50		255		51.00
Hdcp Score (over Par):		10	14	18	17	14		73		14.60		13.14		13

What does this mean? How are handicaps calculated?
Handicap Projection for Mike Neri for Week 20

If your next round score is:		Your new Handicap will be:
35-39		11
40-45		12
46-50		13
51-56		14
57-62		15