Variables	$H C O_{3}^{-}$	Cl⁻	$S O_{4}^{2 -}$	$N O_{3}^{-}$	Ca²⁺	Mg²⁺	Na⁺	K⁺	EC	pH
$H C O_{3}^{-}$	1
Cl⁻	0.445	1
$S O_{4}^{2 -}$	0.634	0.828	1
$N O_{3}^{-}$	−0.091	0.436	0.156	1
Ca²⁺	0.554	0.930	0.717	0.542	1
Mg²⁺	0.656	0.951	0.897	0.351	0.914	1
Na⁺	0.504	0.988	0.878	0.392	0.895	0.959	1
K⁺	0.398	0.714	0.526	0.566	0.739	0.669	0.707	1
EC	0.576	0.984	0.877	0.427	0.942	0.984	0.988	0.716	1
pH	0.856	0.263	0.466	−0.079	0.375	0.442	0.329	0.423	0.388	1