CONVERSION   TABLE
		SPCT	-	+		SPCT	-	+		SPCT	-	+
		4	3.75	4.25		11.5	10	13.5		19	15.25
		4.5	4.25	4.75		12	10.5	14		19.5	15.5
		5	4.75	5.25		12.5	10.75	15		20	16
		5.5	5	6		13	11	15.5		20.5	16.25
		6	5.5	6.5		13.5	11.5	16.5		21	16.5
		6.5	6	7		14	12	17		21.5	17
		7	6.5	7.5		14.5	12.25	18		22	17.5
		7.5	7	8		15	12.5	18.5
		8	7.25	9		15.5	13	19.5
		8.5	7.5	9.5		16	13.25	20
		9	8	10.5		16.5	13.5
		9.5	8.5	11		17	14
		10	9	11.5		17.5	14.25
		10.5	9.25	12		18	14.5
		11	9.5	13		18.5	15