Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 1066 | 975 | 1073 | 1065 | 1099 | 1070 |
| Tmin | 1066 | 975 | 1078 | 1059 | 1099 | 1062 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 578 | 520 | 571 | 585 | 602 | 576 |
| Humidité/Visibilité | 86 | 78 | 85 | 109 | 112 | 112 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 1099 | 1103 | 1066 | 1096 | 1069 | 1103 |
| Tmin | 1096 | 1103 | 1067 | 1100 | 1057 | 1104 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 595 | 592 | 570 | 592 | 594 | 136 |
| Humidité/Visibilité | 109 | 116 | 113 | 111 | 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. |
