Handicap Calculation for Brett Joseph for Week 19

Week of Rounds Used:		19	18	17	15	14		Total		Average		90%		Rounded to:
Gross Score:		53	47	47	46	42		235		47.00
Hdcp Score (over Par):		18	11	12	10	7		58		11.60		10.44		10

What does this mean? How are handicaps calculated?
Handicap Projection for Brett Joseph for Week 20

If your next round score is:		Your new Handicap will be:
26-31		8
32-36		9
37-42		10
43-47		11
48-53		12