Handicap Calculation for Dean Polnerow for Week 19

Week of Rounds Used:		13	10	14	1		Total		Average		90%		Rounded to:
Gross Score:		52	55	52	59		218		54.50
Hdcp Score (over Par):		15	19	16	21		71		17.75		15.97		16

What does this mean? How are handicaps calculated?
Handicap Projection for Dean Polnerow for Week 20

If your next round score is:		Your new Handicap will be:
39-44		14
45-50		15
51-55		16
56-61		17
62-66		18