Table 4.
Principal component matrix and Communalities of physiochemical parameters analysed during January 1989 to January 2016.
| PC | IEV | Variance % | Cumulative % | Na | K | SO4 | BOD | Cl | Ca | B | Mg | TA | NO2+ NO3 |
EC | F | WT | DO | pH | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S1 | 1 | 3.97 | 26.49 | 26.49 | 0.78 | 0.92 | 0.85 | 0.10 | 0.26 | −0.21 | 0.64 | −0.72 | −0.48 | −0.10 | −0.51 | −0.36 | −0.21 | 0.14 | −0.21 |
| 2 | 2.56 | 17.04 | 43.54 | 0.28 | 0.13 | 0.32 | 0.33 | 0.54 | 0.75 | 0.17 | 0.47 | 0.64 | 0.54 | 0.19 | −0.09 | −0.41 | 0.22 | 0.45 | |
| 3 | 1.55 | 10.34 | 53.87 | 0.04 | 0.00 | 0.00 | 0.33 | 0.59 | −0.16 | 0.29 | 0.17 | −0.08 | 0.08 | 0.24 | 0.62 | 0.25 | −0.42 | −0.52 | |
| 4 | 1.43 | 9.52 | 63.39 | 0.04 | 0.05 | 0.08 | 0.47 | −0.03 | 0.08 | −0.31 | 0.04 | −0.06 | 0.28 | −0.18 | −0.56 | 0.65 | −0.48 | 0.09 | |
| Communalities | 0.69 | 0.87 | 0.84 | 0.45 | 0.71 | 0.64 | 0.62 | 0.76 | 0.65 | 0.38 | 0.39 | 0.83 | 0.70 | 0.47 | 0.52 | ||||
| S2 | 1 | 5.70 | 37.97 | 37.97 | 0.94 | 0.85 | 0.83 | 0.40 | 0.68 | 0.84 | 0.55 | 0.05 | 0.88 | 0.45 | 0.21 | −0.30 | 0.46 | −0.65 | 0.21 |
| 2 | 2.30 | 15.31 | 53.27 | −0.08 | −0.38 | −0.37 | 0.53 | 0.27 | 0.28 | −0.27 | 0.61 | 0.21 | 0.34 | 0.58 | 0.52 | −0.26 | −0.2 | −0.52 | |
| 3 | 2.02 | 13.44 | 66.72 | −0.04 | −0.19 | −0.04 | −0.12 | 0.11 | 0.17 | −0.23 | 0.65 | 0.01 | 0.61 | −0.56 | −0.43 | −0.44 | 0.09 | 0.60 | |
| 4 | 1.30 | 8.64 | 75.35 | 0.08 | 0.05 | 0.12 | −0.44 | 0.33 | −0.07 | 0.49 | 0.07 | 0.08 | 0.14 | 0.04 | 0.59 | −0.26 | 0.52 | 0.06 | |
| Communalities | 0.90 | 0.90 | 0.84 | 0.65 | 0.65 | 0.81 | 0.67 | 0.80 | 0.82 | 0.71 | 0.70 | 0.89 | 0.54 | 0.74 | 0.68 | ||||
| S3 | 1 | 4.46 | 29.72 | 29.72 | 0.92 | 0.81 | 0.88 | 0.51 | 0.67 | 0.81 | 0.58 | −0.06 | 0.34 | 0.46 | −0.28 | 0.02 | 0.02 | 0.17 | 0.25 |
| 2 | 2.21 | 14.75 | 44.47 | −0.14 | −0.45 | −0.27 | 0.12 | 0.31 | 0.29 | −0.28 | 0.80 | 0.36 | 0.60 | 0.26 | 0.26 | −0.42 | 0.41 | 0.2 | |
| 3 | 1.69 | 11.26 | 55.73 | 0.00 | 0.08 | 0.00 | −0.27 | 0.25 | −0.18 | 0.33 | 0.00 | 0.65 | −0.11 | 0.68 | 0.46 | 0.25 | −0.40 | −0.27 | |
| 4 | 1.54 | 10.27 | 66.00 | 0.17 | 0.00 | −0.07 | 0.41 | 0.09 | 0.13 | −0.52 | 0.32 | −0.32 | 0.08 | 0.02 | 0.21 | 0.68 | −0.57 | 0.04 | |
| 5 | 1.16 | 7.70 | 73.70 | −0.11 | 0.13 | 0.09 | 0.06 | −0.08 | −0.17 | −0.04 | −0.07 | 0.01 | −0.22 | −0.05 | 0.47 | −0.29 | −0.21 | 0.82 | |
| 6 | 1.04 | 6.94 | 80.64 | 0.01 | 0.06 | −0.06 | 0.52 | 0.09 | −0.12 | −0.19 | −0.13 | 0.23 | −0.23 | 0.47 | −0.57 | −0.11 | 0.00 | 0.17 | |
| Communalities | 0.90 | 0.88 | 0.86 | 0.80 | 0.63 | 0.82 | 0.83 | 0.77 | 0.81 | 0.69 | 0.83 | 0.87 | 0.80 | 0.73 | 0.88 | ||||
| S4 | 1 | 4.23 | 28.16 | 28.16 | 0.95 | 0.81 | 0.84 | 0.62 | 0.60 | 0.55 | 0.46 | −0.35 | 0.22 | 0.32 | −0.51 | −0.31 | 0.24 | −0.06 | −0.12 |
| 2 | 3.09 | 20.59 | 48.75 | 0.09 | −0.25 | −0.05 | 0.27 | 0.50 | 0.53 | −0.35 | 0.75 | 0.71 | 0.64 | 0.61 | 0.22 | −0.44 | 0.34 | 0.28 | |
| 3 | 1.57 | 10.47 | 59.22 | 0.00 | −0.06 | −0.11 | −0.02 | 0.40 | −0.21 | 0.27 | 0.03 | 0.30 | −0.04 | 0.15 | 0.76 | 0.44 | −0.5 | −0.39 | |
| 4 | 1.21 | 8.04 | 67.26 | −0.11 | 0.24 | 0.24 | −0.45 | 0.02 | −0.04 | 0.43 | −0.33 | 0.15 | 0.02 | 0.25 | 0.19 | −0.54 | −0.15 | 0.38 | |
| 5 | 1.09 | 7.26 | 74.53 | 0.03 | −0.04 | −0.15 | 0.05 | 0.05 | −0.03 | 0.45 | 0.08 | −0.26 | 0.08 | −0.16 | 0.27 | −0.35 | 0.59 | −0.46 | |
| Communalities | 0.92 | 0.79 | 0.81 | 0.66 | 0.77 | 0.64 | 0.79 | 0.79 | 0.74 | 0.53 | 0.75 | 0.82 | 0.86 | 0.74 | 0.6 | ||||
| S5 | 1 | 4.48 | 29.85 | 29.85 | 0.93 | 0.85 | 0.78 | 0.44 | 0.45 | 0.73 | 0.57 | −0.19 | 0.68 | 0.19 | 0.24 | −0.14 | 0.37 | −0.47 | −0.25 |
| 2 | 2.45 | 16.35 | 46.19 | −0.06 | −0.35 | −0.29 | 0.40 | 0.31 | 0.45 | −0.41 | 0.83 | 0.44 | 0.63 | 0.35 | 0.17 | −0.41 | 0.09 | −0.12 | |
| 3 | 1.91 | 12.74 | 58.94 | −0.02 | −0.20 | −0.40 | 0.07 | 0.13 | −0.17 | 0.15 | 0.02 | 0.28 | −0.39 | 0.33 | 0.82 | 0.43 | −0.6 | 0.27 | |
| 4 | 1.46 | 9.71 | 68.64 | 0.13 | 0.20 | 0.16 | −0.41 | 0.09 | −0.04 | 0.03 | −0.02 | 0.38 | −0.11 | 0.28 | 0.15 | −0.33 | 0.52 | 0.75 | |
| 5 | 1.36 | 9.10 | 77.74 | 0.07 | −0.07 | 0.04 | −0.39 | 0.43 | −0.02 | 0.38 | 0.27 | −0.11 | 0.36 | −0.74 | 0.31 | 0.00 | −0.07 | 0.09 | |
| Communalities | 0.88 | 0.93 | 0.88 | 0.68 | 0.51 | 0.77 | 0.67 | 0.79 | 0.88 | 0.74 | 0.91 | 0.84 | 0.60 | 0.86 | 0.72 | ||||