Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 508 | 473 | 513 | 486 | 517 | 502 |
| Tmin | 506 | 461 | 507 | 490 | 507 | 506 |
| Durée d’insolation | 64 | 60 | 64 | 65 | 71 | 76 |
| Précipitation | 510 | 465 | 496 | 480 | 497 | 495 |
| Humidité/Visibilité | 67 | 67 | 64 | 60 | 69 | 72 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 516 | 524 | 494 | 511 | 480 | 492 |
| Tmin | 511 | 511 | 482 | 507 | 474 | 489 |
| Durée d’insolation | 71 | 67 | 56 | 67 | 52 | 49 |
| Précipitation | 520 | 519 | 502 | 510 | 496 | 143 |
| Humidité/Visibilité | 77 | 73 | 63 | 62 | 48 | 50 |
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. |
