No. of station(s) to be eliminated

Optimal station(s) combination that can be eliminated

Interpol. method

RMSE

r2

MAPE

NSE

ACFT

1

10

IDW

0.144

0.877

6.608

0.841

0.914

2

10, 16

UK

0.174

0.838

6.842

0.775

0.901

3

2, 10, 16

UK

0.237

0.807

11.283

0.671

0.863

4

2, 10, 14, 16

UK

0.239

0.718

16.928

0.659

0.915

5

2, 9, 10, 14, 16

IDW

0.236

0.665

25.182

0.647

0.953

6

2, 4, 9, 10, 14, 16

IDW

0.287

0.581

34.782

0.476

0.870

7

2, 4, 7, 9, 10, 14, 16

IDW

0.288

0.509

44.646

0.467

0.951

8

2, 4, 7, 9, 10, 14, 15, 16

UK

0.329

0.444

51.856

0.374

0.926