. 2018 May 18;19:548–563. doi: 10.1016/j.dib.2018.05.039

Table 7.

Testing the values of t-factors relative to “r” values obtained to determine whether there is a correlation or acceptable relation between variables.

Grayscale points show that there is a correlation and acceptable relation between the parameters with the assumption of alpha α 0.05 and t (2.6877) in the second six months of 2017
$t = r \sqrt{\frac{n - 2}{1 - r^{2}}}$				1	2	3	4	5	6	7	8	9	10	11	12	13
Num	Min	Max	Ions	EC	TDS	F⁻	CL⁻	SO₄⁻²	HCO₃⁻	NO₃⁻	PO₄⁻³	Ca⁺²	Mg⁺²	Na⁺	K⁺	Fe⁺²
1	*	*	EC	*
2	*	*	TDS	*	*
3	1.09	2.43	F⁻	1.09	2.43	*
4	2.00	30.90	CL⁻	30.90	30.90	2.00	*
5	2.08	26.55	SO₄⁻²	26.55	26.55	2.08	15.12	*
6	0.54	2.80	HCO₃⁻	1.83	1.83	2.80	0.54	1.49	*
7	−0.38	3.08	NO₃⁻	2.61	2.61	0.077	2.43	3.08	−0.38	*
8	−2.52	2.08	PO₄⁻³	1.58	1.58	0.77	1.58	1.91	−2.52	2.08	*
9	−1.01	4.97	Ca⁺²	4.97	4.97	−1.01	4.47	4.50	2.52	2.34	0.00	*
10	−0.62	11.52	Mg⁺²	6.45	6.45	0.15	5.66	5.66	3.68	2.52	−0.62	11.52	*
11	1.49	26.55	Na⁺	26.55	26.55	3.38	19.59	19.59	1.49	2.34	1.74	2.43	3.79	*
12	−1.58	5.66	K⁺	2.98	2.98	−0.54	2.80	3.18	−1.58	2.80	5.66	4.01	1.49	2.08	*
13	−0.77	1.49	Fe⁺²	0.38	0.38	0.15	0.38	0.31	−0.077	0.54	0.38	0.54	1.49	0.23	0.46	*

^* The correlation between these parameters it were 100 percent, so t-factor for these parameters is not calculate.