Table 2 Variation range of division of the \(\frac{\text{K}}{\textrm{F}}\) values by \({\upphi }_{\text{HEI}}\) for dataset 1.

HEI 1

0 < (K/F)/(\({\upphi }_{\text{HEI}}\)) < 0.1

HEI 2

0.1 < (K/F)/(\({\upphi }_{\text{HEI}}\)) < 0.2

HEI 3

0.2 < (K/F)/(\({\upphi }_{\text{HEI}}\)) < 0.4

HEI 4

0.4 < (K/F)/(\({\upphi }_{\text{HEI}}\)) < 2

HEI 5

2 < (K/F)/(\({\upphi }_{\text{HEI}}\)) < 4

HEI 6

4 < (K/F)/(\({\upphi }_{\text{HEI}}\)) < 10

HEI 7

10 < (K/F)/(\({\upphi }_{\text{HEI}}\)) < 25

HEI 8

25 < (K/F)/(\({\upphi }_{\text{HEI}}\)) < 200

HEI 9

(K/F)/(\({\upphi }_{\text{HEI}}\)) > 200