Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 1167 | 1065 | 1175 | 1170 | 1204 | 1167 |
| Tmin | 1167 | 1066 | 1177 | 1167 | 1206 | 1167 |
| Durée d’insolation | 124 | 197 | 186 | 240 | 186 | 210 |
| Précipitation | 94 | 87 | 94 | 124 | 124 | 120 |
| Humidité/Visibilité | 91 | 83 | 91 | 117 | 122 | 117 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 1200 | 1205 | 1164 | 1204 | 1168 | 1205 |
| Tmin | 1203 | 1208 | 1164 | 1197 | 1160 | 1203 |
| Durée d’insolation | 248 | 248 | 210 | 248 | 180 | 155 |
| Précipitation | 126 | 126 | 120 | 122 | 122 | 124 |
| Humidité/Visibilité | 122 | 121 | 118 | 116 | 117 | 122 |
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. |
