Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 1965 | 1782 | 1972 | 1942 | 1997 | 1940 |
| Tmin | 1971 | 1785 | 1977 | 1938 | 1995 | 1946 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 186 | 170 | 187 | 181 | 186 | 180 |
| Humidité/Visibilité | 179 | 163 | 181 | 173 | 177 | 175 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 1993 | 1998 | 1926 | 1989 | 1935 | 2001 |
| Tmin | 2002 | 2000 | 1939 | 1994 | 1939 | 2006 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 189 | 190 | 211 | 218 | 211 | 219 |
| Humidité/Visibilité | 176 | 179 | 198 | 194 | 190 | 208 |
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. |
