| Method |
Error statistic |
Belg season |
Kiremt season |
| Simple kriging (SK) |
RMSE |
9.30 |
79.42 |
| ME |
–1.88 |
–2.82 |
| Universal kriging (UK) |
RMSE |
9.82 |
81.56 |
| ME |
0.73 |
3.71 |
| Ordinary kriging (OK) |
RMSE |
8.12 |
45.21 |
| ME |
0.01 |
1.01 |
| Radial Basis Function (RBF) |
RMSE |
17.04 |
65.89 |
| ME |
0.01 |
1.73 |
| Local Polynomial Interpolator (LPI) |
RMSE |
21.01 |
86.03 |
| ME |
1.04 |
5.03 |
| Global Polynomial Interpolator (GPI) |
RMSE |
26.9 |
82.31 |
| ME |
0.12 |
3.66 |
| Inverse Distance Weighting (IDW) |
RMSE |
22.18 |
81.38 |
| ME |
0.67 |
19.61 |
|
