Table 2.

List of feature numbers $i$ and $j$ with high correlation coefficient.

$i$	$j$ when $|{\rho }_{i,j}|\ge 0.95$	$j$ when $0.95>|{\rho }_{i,j}|\ge 0.90$	$i$	$j$ when $|{\rho }_{i,j}|\ge 0.95$	$j$ when $0.95>|{\rho }_{i,j}|\ge 0.90$
1	2, 4, 5, 6, 30, 33	3, 12, 29	22		20
2	1, 3, 4, 5, 6, 30, 33		23		25
3	2, 6	1, 5, 30, 33	24	11, 18, 36
4	1, 2, 5, 6	30, 33	25		23
5	1, 2, 4, 6, 30, 33	3, 12, 29	26	20
6	1, 2, 3, 4, 5, 30	33	27		28
8	9		28		27
9	8		29		1, 5, 33
11	18, 24, 36		30	1, 2, 5, 6, 33	3, 4
12	13	1, 5	33	1, 2, 5, 30	3, 4, 6, 29
13	12		36	11, 18, 24
18	11, 24, 36		37		38
20	26	22	38		37