Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 442 | 408 | 456 | 446 | 463 | 453 |
| Tmin | 461 | 411 | 459 | 447 | 460 | 449 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 64 | 61 | 63 | 66 | 68 | 77 |
| Humidité/Visibilité | 54 | 48 | 57 | 54 | 57 | 63 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 483 | 476 | 474 | 487 | 459 | 485 |
| Tmin | 475 | 473 | 466 | 484 | 457 | 490 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 100 | 94 | 104 | 100 | 93 | 99 |
| Humidité/Visibilité | 79 | 74 | 76 | 77 | 68 | 86 |
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. |
