Table 6.
Fitting and prediction performance results for seasonal solar radiation models.
| Solar radiation season | Predictors | AIC | Adj.R2 | MSE |
|---|---|---|---|---|
| FMA | t (Case 1) | 479 | −0.01 | 192.05 |
| SOI (Case 2) | 472 | 0.11 | 167.59 | |
| GPH850.1_PC1 (Case 2) | 467 | 0.18 | 155.43 | |
| SST1_PC1 (Case 2) | 463 | 0.24 | 144.76 | |
| GPH850.2-PC1 (Case 2) | 455 | 0.33 | 142.75 | |
| SST1-PC1; GPH850.1-PC1 (Case 3) | 459 | 0.29 | 136.56 | |
| GPH850.1-PC1; GPH850.2-PC1 (Case 3) | 454 | 0.35 | 136.45 | |
| SST1-PC1; GPH850.2_PC1 (Case 3) ** | 452 | 0.38 | 125.06 | |
| MJJ | t (Case 1) | 502 | 0.11 | 280.32 |
| t; SST1-PC1 (Case 2) ** | 496 | 0.21 | 256.27 | |
| ASO | t (Case 1) | 496 | 0.03 | 254.81 |
| SST1-PC1 (Case 2) ** | 487 | 0.17 | 222.67 | |
| NDJ | t (Case 1) | 441 | 0.19 | 99.90 |
| t; GPH850.1-PC1 (Case 2) | 431 | 0.32 | 85.25 | |
| t; SST2_PC1 (Case 2) | 428 | 0.36 | 79.27 | |
| t; NINO3.4 (Case 2) | 428 | 0.36 | 78.68 | |
| t; SOI (Case 2) | 427 | 0.37 | 79.54 | |
| t; SST1-PC1 (Case 2) | 426 | 0.38 | 78.17 | |
| t; GPH850.2_PC1 (Case 2) | 413 | 0.50 | 62.70 | |
| t; GPH850.2_PC1; SOI (Case 3) | 412 | 0.52 | 61.59 | |
| t; GPH850.2-PC1; NINO3.4 (Case 3) | 411 | 0.52 | 61.06 | |
| t; GPH850.1_PC1; GPH850.2_PC1 (Case 3) | 410 | 0.53 | 63.79 | |
| t; SST1-PC1; GPH850.2-PC1 (Case 3) | 410 | 0.53 | 59.10 | |
| t; SST1_PC1; GPH850.1_PC1; GPH850.2_PC1 (Case 3) ** | 406 | 0.57 | 56.62 |
‘**’ indicates the best model for solar radiation according to AIC and Adj.R2.