Mg		Ca		N		Water hardness
	Ave	SD	Ave	SD	Mg	Ca	ppm CaCO3
all	14.02	21.80	20.51	51.89	61	76	108.99
S'05	14.58	14.75	26.47	60.22	8	16	126.15
F'04	15.72	29.18	32.41	83.07	20	21	145.73
F'00	9.63	10.13	9.80	6.55	21	25	64.12
S'01	18.51	27.05	15.00	11.36	12	14	113.68
Davis	50.24	41.47	18.95	14.93	3	2	254.13
Sac Region	7.78	7.07	16.05	33.99	47	61	72.15
Surrounding Region	35.99	38.78	42.88	101.95	15	10	255.30
Near CSUS/So. Side	2.56	1.99	7.96	1.92	5	11	30.45
Near CSUS/No. Side	12.70	4.78	34.00	76.17	11	12	137.27
South Sacramento	7.85	9.19	6.05	3.41	9	10	47.43
NE region	2.23	1.14	10.88	10.89	9	13	36.38
Rancho Cordova	5.67	3.46	8.53	3.42	3	4	44.67