| Wind direction & temperature | Wind direction & humidity | Wind direction & wind speed | Temperature & humidity | Temperature & wind speed | Humidity & wind speed |
Linear model | 0.7919 | 0.2105 | 0.7554 | 0.6390 | −0.2465 | 0.0168 |
Quadratic model | 0.7930 | 0.2086 | 0.7420 | −0.2465 | 0.6390 | 0.0168 |
Variable power model | 0.7831 | 0.4155 | 0.5424 | −0.1147 | 0.6038 | 0.1638 |