Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 708 | 639 | 710 | 711 | 741 | 717 |
| Tmin | 710 | 638 | 708 | 708 | 740 | 717 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 715 | 649 | 717 | 719 | 747 | 720 |
| Humidité/Visibilité | 122 | 110 | 122 | 142 | 153 | 147 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 737 | 739 | 715 | 732 | 714 | 743 |
| Tmin | 736 | 739 | 716 | 735 | 715 | 740 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 747 | 747 | 724 | 741 | 722 | 743 |
| Humidité/Visibilité | 150 | 151 | 145 | 148 | 146 | 154 |
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. |
