Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 705 | 642 | 710 | 686 | 707 | 682 |
| Tmin | 710 | 639 | 710 | 688 | 710 | 679 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 527 | 476 | 528 | 513 | 528 | 517 |
| Humidité/Visibilité | 179 | 165 | 183 | 175 | 181 | 170 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 707 | 708 | 715 | 717 | 709 | 740 |
| Tmin | 704 | 712 | 711 | 716 | 710 | 741 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 532 | 531 | 541 | 536 | 539 | 558 |
| Humidité/Visibilité | 178 | 182 | 202 | 190 | 202 | 213 |
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. |
