| Coefficients | Summer | Winter | ||
| LSRM | PSO | LSRM | PSO | |
| a | 0.343 | 0.3326 | −1.95 | −1.8028 |
| b | 10.8 | 10.787 | 58.189 | 56.175 |
| c | 2412.8 | 2410.3 | 2317.2 | 2313 |