Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 730 | 651 | 731 | 731 | 753 | 734 |
| Tmin | 730 | 633 | 721 | 728 | 748 | 719 |
| Durée d’insolation | 217 | 169 | 186 | 150 | 186 | 180 |
| Précipitation | 611 | 538 | 597 | 601 | 634 | 621 |
| Humidité/Visibilité | 110 | 92 | 110 | 133 | 135 | 129 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 757 | 741 | 718 | 739 | 730 | 749 |
| Tmin | 752 | 741 | 717 | 741 | 724 | 736 |
| Durée d’insolation | 217 | 217 | 210 | 248 | 150 | 248 |
| Précipitation | 631 | 627 | 639 | 652 | 620 | 183 |
| Humidité/Visibilité | 134 | 119 | 119 | 125 | 127 | 124 |
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. |
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