Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 1302 | 1176 | 1302 | 1260 | 1302 | 1260 |
| Tmin | 1302 | 1176 | 1302 | 1260 | 1302 | 1260 |
| Durée d’insolation | 248 | 254 | 248 | 270 | 279 | 210 |
| Précipitation | 58 | 41 | 43 | 45 | 37 | 43 |
| Humidité/Visibilité | 12 | 24 | 26 | 24 | 30 | 33 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 1302 | 1302 | 1260 | 1302 | 1260 | 1302 |
| Tmin | 1302 | 1302 | 1260 | 1302 | 1260 | 1302 |
| Durée d’insolation | 217 | 217 | 240 | 310 | 240 | 279 |
| Précipitation | 47 | 39 | 41 | 40 | 51 | 72 |
| Humidité/Visibilité | 28 | 34 | 29 | 29 | 54 | 29 |
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. |
