Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 584 | 527 | 586 | 566 | 580 | 568 |
| Tmin | 588 | 525 | 585 | 564 | 586 | 566 |
| Durée d’insolation | 168 | 154 | 170 | 161 | 172 | 166 |
| Précipitation | 496 | 454 | 498 | 487 | 498 | 482 |
| Humidité/Visibilité | 182 | 164 | 181 | 175 | 181 | 176 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 586 | 583 | 596 | 611 | 590 | 614 |
| Tmin | 585 | 586 | 593 | 608 | 595 | 616 |
| Durée d’insolation | 172 | 163 | 196 | 194 | 190 | 189 |
| Précipitation | 496 | 502 | 516 | 529 | 513 | 217 |
| Humidité/Visibilité | 183 | 180 | 204 | 208 | 202 | 209 |
Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured. |
