Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 96 | 92 | 121 | 119 | 117 | 127 |
| Tmin | 90 | 90 | 117 | 130 | 130 | 119 |
| Durée d’insolation | 173 | 158 | 230 | 213 | 262 | 226 |
| Précipitation | 119 | 110 | 150 | 162 | 160 | 166 |
| Humidité/Visibilité | 95 | 86 | 106 | 116 | 115 | 118 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 122 | 110 | 118 | 117 | 129 | 131 |
| Tmin | 122 | 111 | 118 | 118 | 126 | 134 |
| Durée d’insolation | 212 | 290 | 272 | 236 | 230 | 300 |
| Précipitation | 180 | 198 | 189 | 177 | 180 | 186 |
| Humidité/Visibilité | 108 | 99 | 99 | 103 | 115 | 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. |
