Pr

Ramachandran et al. (1988)

Lok et al. (2005)

Ishak et al. (2008)

Olanrewaju et al. (2011)

Present study

0.7

0.7641

0.764087

0.7641

0.7640634014961508

0.7640628

1

-

-

0.8708

0.8707786011745782

0.8707778

7

1.7224

1.722775

1.7225

1.7223816064916741

1.7223785

10

-

-

1.9448

1.9446173966286199

1.9446135