Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 1152 | 1066 | 1178 | 1153 | 1205 | 1167 |
| Tmin | 1154 | 1066 | 1177 | 1155 | 1206 | 1169 |
| Durée d’insolation | 214 | 252 | 279 | 276 | 309 | 296 |
| Précipitation | 712 | 646 | 715 | 708 | 746 | 722 |
| Humidité/Visibilité | 91 | 84 | 91 | 103 | 122 | 119 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 1206 | 1181 | 1130 | 1173 | 1137 | 1177 |
| Tmin | 1207 | 1180 | 1133 | 1176 | 1139 | 1178 |
| Durée d’insolation | 274 | 218 | 294 | 304 | 233 | 244 |
| Précipitation | 744 | 744 | 720 | 740 | 720 | 126 |
| Humidité/Visibilité | 122 | 122 | 117 | 115 | 116 | 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. |
