Using Statistical Analysis to Assess Urban Groundwater in Beni Mellal City (Morocco)

Table 5

Parameters for variograms model and Moran’s index for Beni Mellal groundwater.

Variable	Model	Nugget	Sill	N/S	Range	Moran’s I	Spatial class
		C0	(C0 + C)	(%)	(m)
EC	Spherical	13450	34396.57	39	2000	0.408	M
pH	Spherical	0.023	0.036518	63	1505	0.068	M
TDS	Spherical	3953	18538.77	21	2560	0.433	S
T (°C)	Spherical	0.427	7.1944	6	3000	0.214	S
DO	Spherical	0.0119	0.05224	23	1090	−0.023	S
Ca	Spherical	1090	2441.62	45	4620	0.142	M
Mg	Spherical	176	208.83	84	5580	−0.003	W
Na	Spherical	76	183.46	41	1500	0.293	M
K	Spherical	0.473	3.7291	13	1900	0.345	S
HCO3^2−	Spherical	1395	3271.21	43	4571	0.235	M
SO4^2−	Spherical	906.4	47978.85	2	2000	−0.048	S
NO^3−	Spherical	4.21	67.36	6	1580	0.091	S
Cl^−	Spherical	0	532.13	0	5730	0.427	S
Ag	Spherical	2.502	6.971	36	1130	0.056	M
Al	Spherical	56.9	3469.74	2	1500	0.087	S
Ba	Spherical	0	1290	0	7790	0.525	S
Cd	Spherical	0.45	0.811	55	2000	0.297	M
Cr	Spherical	1.5	3.745	40	2300	0.275	M
Cu	Spherical	45	90.41	50	1700	0.149	M
Fe	Spherical	5519	8281.12	67	3000	0.0189	M
Li	Spherical	0	1.324	0	3470	0.25	S
Mn	Spherical	2.01	6.931	29	3500	0.425	M
Ni	Spherical	6.7	11.03	61	5180	0.172	M
Pb	Spherical	0.1531	1.036	15	1700	0.383	S
Zn	Spherical	2800	7263.14	39	7200	0.474	M
%Na	Spherical	3	10.23	29	5520	0.236	M
SAR	Spherical	0.4864	1.047	46	2000	0.336	M
RSC	Spherical	5.13	10.909	47	3500	−0.036	M
LSI	Spherical	0.0213	0.1179	18	1520	0.175	S

S = strong spatial dependency (% nugget <25); M = moderate spatial dependency (% nugget between 25 and 75); W = weak spatial dependency (% nugget >75) as proposed by Cambardella et al. (1994).