Handicap Calculation for Craig Arel for Week 19

Week of Rounds Used:		18	17	16	15	14		Total		Average		90%		Rounded to:
Gross Score:		43	46	44	54	46		233		46.60
Hdcp Score (over Par):		8	11	9	18	11		57		11.40		10.26		10

What does this mean? How are handicaps calculated?
Handicap Projection for Craig Arel for Week 20

If your next round score is:		Your new Handicap will be:
31-36		8
37-41		9
42-47		10
48-52		11
53-58		12