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. 2020 Apr 24;17(8):2942. doi: 10.3390/ijerph17082942

Table 1.

Correlation coefficient matrix.

pH EC DO CODMn BOD Hg NH3-N Pb COD TN TP Cu Zn Fluoride As Cd Cr(Ⅵ) FC
pH 1.00
EC −0.01 1.00
DO 0.60 −0.65 1.00
CODMn −0.04 0.91 −0.58 1.00
BOD 0.09 0.78 −0.20 0.70 1.00
Hg 0.11 −0.12 −0.29 −0.15 −0.48 1.00
NH3-N −0.56 0.65 −0.74 0.68 0.59 0.03 1.00
Pb −0.06 0.28 −0.66 0.18 −0.23 0.88 0.28 1.00
COD −0.05 0.96 −0.68 0.95 0.73 −0.01 0.74 0.35 1.00
TN −0.30 0.89 −0.77 0.95 0.65 −0.09 0.81 0.29 0.95 1.00
TP −0.46 0.82 −0.83 0.86 0.61 −0.05 0.89 0.31 0.88 0.97 1.00
Cu 0.29 0.79 −0.26 0.72 0.67 −0.14 0.38 0.11 0.70 0.57 0.43 1.00
Zn 0.22 −0.03 −0.28 −0.19 −0.37 0.94 −0.04 0.89 0.02 −0.13 −0.10 −0.05 1.00
fluoride −0.14 0.95 −0.73 0.74 0.71 −0.05 0.66 0.38 0.88 0.80 0.77 0.67 0.11 1.00
As 0.28 0.67 −0.38 0.36 0.42 0.08 0.11 0.40 0.58 0.38 0.28 0.44 0.34 0.77 1.00
Cd −0.37 0.70 −0.89 0.71 0.18 0.27 0.62 0.63 0.77 0.82 0.77 0.35 0.22 0.68 0.46 1.00
Cr(Ⅵ) 0.27 −0.01 −0.25 −0.17 −0.35 0.94 −0.06 0.88 0.02 −0.13 −0.11 0.00 1.00 0.10 0.33 0.20 1.00
FC −0.43 0.25 −0.51 0.24 0.29 0.30 0.70 0.36 0.29 0.37 0.56 0.09 0.26 0.32 −0.16 0.16 0.25 1.00

Bold typeface: Strong correlation coefficient.