. 2020 Oct 28;33:106462. doi: 10.1016/j.dib.2020.106462

Table 3.

Pearson correlation matrix (r²) of physico-chemical parameters and major ions (N = 50) of groundwater in pre-monsoon.

(a)
	pH	EC (µS/cm)	TDS (mg/L)	Na⁺ (mg/L)	K⁺ (mg/L)	Ca²⁺ (mg/L)	Mg²⁺ (mg/L)	TH as CaCO₃ (mg/L)	HCO₃⁻ (mg/L)	Cl⁻ (mg/L)	SO₄²⁻ (mg/L)	NO₃⁻ (mg/L)	F⁻ (mg/L)
pH	1
EC	−0.35^*	1
TDS	−0.35^*	1.00^⁎⁎	1
Na⁺	0.04	0.54^⁎⁎	0.54^⁎⁎	1
K⁺	−0.17	0.72^⁎⁎	0.72^⁎⁎	0.04	1
Ca²⁺	−0.66^⁎⁎	0.54^⁎⁎	0.54^⁎⁎	0.17	0.20	1
Mg²⁺	−0.36^⁎⁎	0.66^⁎⁎	0.66^⁎⁎	0.23	0.44^⁎⁎	0.46^⁎⁎	1
HCO₃⁻	0.05	−0.08	−0.08	−0.04	−0.01	−0.46^⁎⁎	0.01	−0.23	1
Cl⁻	−0.37^⁎⁎	0.91^⁎⁎	0.91^⁎⁎	0.44^⁎⁎	0.69^⁎⁎	0.64^⁎⁎	0.64^⁎⁎	0.51^⁎⁎	−0.22	1
SO₄²⁻	0.04	0.47^⁎⁎	0.47^⁎⁎	0.74^⁎⁎	0.19	0.13	0.34^*	0.14	−0.13	0.30^*	1
NO₃⁻	−0.34^*	0.84^⁎⁎	0.84^⁎⁎	0.40^⁎⁎	0.63^⁎⁎	0.57^⁎⁎	0.70^⁎⁎	0.64^⁎⁎	−0.17	0.83^⁎⁎	0.25	1
F⁻	0.31^*	−0.04	−0.04	0.43^⁎⁎	−0.17	−0.41^⁎⁎	−0.14	−0.24	0.19	−0.23	0.47^⁎⁎	−0.15	1

(b)

pH	1
EC	−0.18	1
TDS	−0.17	1.00^⁎⁎	1
Na⁺	−0.35^*	0.56^⁎⁎	0.56^⁎⁎	1
K⁺	−0.21	0.59^⁎⁎	0.59^⁎⁎	0.49^⁎⁎	1
Ca²⁺	−0.38^⁎⁎	0.65^⁎⁎	0.65^⁎⁎	0.36^*	0.26	1
Mg²⁺	−0.26	0.62^⁎⁎	0.62^⁎⁎	0.37^⁎⁎	0.22	0.5^⁎⁎	1
TH as CaCO₃	0.02	0.41^⁎⁎	0.41^⁎⁎	−0.11	0.11	0.34^*	0.32^*	1
HCO₃⁻	−0.53^⁎⁎	0.35^*	0.35^*	0.54^⁎⁎	0.41^⁎⁎	0.19	0.18	−0.13	1
Cl⁻	−0.38^⁎⁎	0.70^⁎⁎	0.70^⁎⁎	0.85^⁎⁎	0.57^⁎⁎	0.61^⁎⁎	0.63^⁎⁎	0.05	0.43^⁎⁎	1
SO₄²⁻	−0.17	0.38^⁎⁎	0.38^⁎⁎	0.42^⁎⁎	0.01	0.13	0.38^⁎⁎	−0.08	0.26	0.21	1
NO₃⁻	−0.15	0.66^⁎⁎	0.66^⁎⁎	0.27	0.39^⁎⁎	0.60^⁎⁎	0.50^⁎⁎	0.82^⁎⁎	0.05	0.46^⁎⁎	0.06	1
F⁻	0.43^⁎⁎	−0.06	−0.06	−0.13	−0.19	−0.25	−0.13	−0.09	−0.30^*	−0.22	0.11	−0.12	1

^⁎

Correlation is significant at the 0.05 level (2-tailed).

^⁎⁎

Correlation is significant at the 0.01 level (2-tailed).