Table 3.

The rotated common factors for loadings, the percentage of variance and the total cumulative percentage of variance in the southern and northern areas.

Parameter	North a				South a
	Factor 1	Factor 2	Factor 3	Factor 4	Factor 1	Factor 2	Factor 3	Factor 4
Temp.	0.079	0.200	0.168	−0.277	0.057	0.146	−0.201	0.738
pH	0.065	0.814	−0.180	0.017	0.172	0.512	−0.339	−0.486
EC	0.985	0.120	0.043	0.089	0.987	0.070	0.077	0.024
TH	0.887	0.423	0.110	−0.032	0.981	0.043	0.120	0.072
TDS	0.991	0.108	0.030	0.033	0.991	0.050	0.084	0.029
Cl−	0.991	0.027	−0.012	0.068	0.990	0.042	0.077	0.018
NH4−N	0.191	0.124	0.180	0.864	0.351	0.505	0.262	−0.160
NO3−N	−0.033	−0.177	−0.437	−0.158	−0.060	−0.430	−0.574	0.113
SO42−	0.669	0.207	0.359	−0.408	0.974	0.032	0.088	0.110
TOC	0.080	0.257	0.369	0.777	−0.103	0.813	0.093	0.172
Fe2+	0.078	−0.178	0.810	0.193	0.239	−0.072	0.809	0.087
Mn2+	0.009	−0.023	0.892	−0.075	0.294	0.105	0.319	0.597
Na+	0.990	0.039	0.008	0.089	0.984	0.062	0.066	0.003
K+	0.962	0.104	−0.023	0.028	0.971	0.073	0.065	0.014
Ca2+	0.332	0.849	0.069	−0.071	0.729	0.096	0.239	0.239
Mg2	0.965	0.128	0.139	0.076	0.977	0.028	0.095	0.036
Alk	0.100	0.852	0.190	0.373	0.046	0.800	−0.044	0.168
Eigenvalue	7.19	2.57	2.08	1.84	8.56	2.07	1.43	1.32
Total variance (%)	42.28	15.13	12.21	10.80	50.34	12.19	8.44	7.76
Cumulative variance (%)	42.28	57.41	69.62	80.42b	50.34	62.53	70.97	78.73 b

^aThe loadings whose absolute value is more than 0.625 of the total variance were in bold;

^bTotal cumulative variances.