Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 1058 | 981 | 1085 | 1064 | 1112 | 1080 |
| Tmin | 1060 | 982 | 1085 | 1066 | 1113 | 1078 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 93 | 85 | 95 | 109 | 125 | 120 |
| Humidité/Visibilité | 92 | 84 | 92 | 104 | 122 | 119 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 1114 | 1114 | 1077 | 1109 | 1077 | 1112 |
| Tmin | 1116 | 1116 | 1077 | 1110 | 1078 | 1115 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 127 | 127 | 120 | 123 | 120 | 124 |
| Humidité/Visibilité | 122 | 122 | 118 | 117 | 118 | 123 |
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. |
