Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 1056 | 975 | 1060 | 1063 | 1095 | 1065 |
| Tmin | 1059 | 976 | 1074 | 1061 | 1098 | 1065 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 601 | 549 | 604 | 614 | 630 | 604 |
| Humidité/Visibilité | 85 | 77 | 79 | 108 | 109 | 113 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 1093 | 1101 | 1070 | 1089 | 1055 | 1101 |
| Tmin | 1098 | 1101 | 1072 | 1093 | 1060 | 1104 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 628 | 626 | 602 | 620 | 608 | 132 |
| Humidité/Visibilité | 108 | 115 | 110 | 105 | 104 | 114 |
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. |
