Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 1061 | 970 | 1072 | 1056 | 1076 | 1067 |
| Tmin | 1062 | 972 | 1074 | 1059 | 1077 | 1061 |
| Durée d’insolation | 216 | 139 | 183 | 164 | 236 | 178 |
| Précipitation | 132 | 107 | 127 | 145 | 150 | 146 |
| Humidité/Visibilité | 77 | 76 | 85 | 97 | 99 | 105 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 1089 | 1089 | 1034 | 1082 | 1020 | 1086 |
| Tmin | 1096 | 1090 | 1035 | 1089 | 1023 | 1089 |
| Durée d’insolation | 205 | 240 | 258 | 228 | 251 | 158 |
| Précipitation | 148 | 147 | 154 | 141 | 151 | 177 |
| Humidité/Visibilité | 104 | 102 | 97 | 96 | 92 | 99 |
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. |
