Table 1
Error metrics and calibration results for the original and modified HSU models calibrated for the soiling conditions observed during the first year at Shinyanga.
| HSU original CT = 2.6 mm day−1; vd = 0.009 m s−1 |
HSU modified a = 0.10, b = 0.23, vd= 0.011m s−1, χ = 0.5% |
|||||
|---|---|---|---|---|---|---|
| RMSE (%) | MAE (%) | Bias (%) | RMSE (%) | MAE (%) | Bias (%) | |
| Calibration | 0.59 | 0.45 | − 0.35 | 0.95 | 0.72 | − 0.14 |
| Validation | 1.89 | 1.16 | − 0.72 | 1.13 | 0.76 | 0.11 |
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