Table 5: Ranking of the evaluated two variable correlation radio refractivity model for osogbo based on the statistical tests.

Models R2 MBE RMSE MPE NSE IA Total
Eqn.17a 6 5 5 5 5 5 31
Eqn.17b 3 2 3 2 3 3 16
Eqn.17c 4 4 4 4 4 4 24
Eqn.17d 1 3 1 3 1 1 10
Eqn.17e 5 6 6 6 6 6 35
Eqn.17f 2 1 2 1 2 2 10