Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 617 | 560 | 616 | 612 | 621 | 593 |
| Tmin | 616 | 559 | 617 | 613 | 644 | 604 |
| Durée d’insolation | 183 | 279 | 307 | 281 | 325 | 331 |
| Précipitation | 65 | 58 | 64 | 75 | 87 | 95 |
| Humidité/Visibilité | 60 | 56 | 60 | 72 | 70 | 66 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 603 | 606 | 597 | 614 | 598 | 620 |
| Tmin | 606 | 612 | 596 | 612 | 599 | 618 |
| Durée d’insolation | 297 | 329 | 355 | 331 | 206 | 67 |
| Précipitation | 104 | 103 | 97 | 90 | 97 | 96 |
| Humidité/Visibilité | 63 | 63 | 77 | 84 | 85 | 90 |
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. |
