Handicap Calculation for Bob Dunne for Week 19

Week of Rounds Used:		0	0	0	0		Total		Average		90%		Rounded to:
Gross Score:		43	41	43	43		170		42.50
Hdcp Score (over Par):		7	6	7	8		28		7.00		6.30		6

What does this mean? How are handicaps calculated?
Handicap Projection for Bob Dunne for Week 20

If your next round score is:		Your new Handicap will be:
27-31		4
32-37		5
38-43		6
44-48		7
49-54		8