Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 1173 | 1092 | 1209 | 1185 | 1240 | 1200 |
| Tmin | 1174 | 1093 | 1209 | 1185 | 1240 | 1199 |
| Durée d’insolation | 248 | 254 | 279 | 270 | 310 | 300 |
| Précipitation | 620 | 563 | 621 | 619 | 651 | 630 |
| Humidité/Visibilité | 92 | 83 | 92 | 104 | 123 | 119 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 1238 | 1238 | 1194 | 1226 | 1198 | 1235 |
| Tmin | 1240 | 1240 | 1195 | 1228 | 1198 | 1240 |
| Durée d’insolation | 310 | 279 | 300 | 310 | 240 | 248 |
| Précipitation | 654 | 654 | 630 | 651 | 630 | 651 |
| Humidité/Visibilité | 122 | 122 | 118 | 111 | 118 | 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. |
