Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 1129 | 1039 | 1199 | 1170 | 1199 | 1139 |
| Tmin | 1129 | 1038 | 1161 | 1136 | 1164 | 1135 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 591 | 533 | 648 | 631 | 653 | 602 |
| Humidité/Visibilité | 48 | 44 | 82 | 88 | 89 | 73 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 1172 | 1153 | 1125 | 1163 | 1140 | 1177 |
| Tmin | 1171 | 1165 | 1139 | 1174 | 1140 | 1178 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 620 | 623 | 601 | 628 | 632 | 637 |
| Humidité/Visibilité | 70 | 56 | 60 | 61 | 69 | 69 |
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. |
