| Model | Predictive factors | Linear model | NN model | R | RMSE (°C) | Bias (°C) | R | RMSE (°C) | Bias (°C) |
| 1 | BT11μm | 0.75 | 5.53 | 0.07 | 0.77 | 4.46 | 0.06 | 2 | BT11μm, PWV | 0.85 | 4.79 | −0.05 | 0.89 | 3.20 | 0.01 | 3 | BT11μm, PWV, RH | 0.84 | 4.78 | −0.06 | 0.95 | 2.21 | 0.09 | 4 | BT11μm, PWV, RH, EL | 0.84 | 4.50 | −0.03 | 0.95 | 2.15 | 0.12 | 5 | BT11μm, PWV, RH, EL, BT12μm | 0.84 | 4.36 | −0.05 | 0.95 | 2.09 | 0.10 | 6 | BT11μm, PWV, RH, EL, BT12μm, LAT | 0.84 | 4.27 | −0.05 | 0.96 | 2.06 | 0.13 | 7 | BT11μm, PWV, RH, EL, BT12μm, LAT, hour | 0.84 | 4.25 | −0.07 | 0.97 | 1.81 | 0.06 | 8 | BT11μm, PWV, RH, EL, BT12μm, LAT, hour, LON | 0.85 | 4.03 | −0.06 | 0.97 | 1.76 | 0.04 | 9 | BT11μm, PWV, RH, EL, BT12μm, LAT, hour, LON, VZA | 0.89 | 3.28 | 0.07 | 0.97 | 1.72 | 0.04 |
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