Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 1937 | 1754 | 1939 | 1869 | 1923 | 1876 |
| Tmin | 1935 | 1761 | 1942 | 1871 | 1928 | 1879 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 187 | 169 | 187 | 181 | 186 | 180 |
| Humidity/Visibility | 179 | 165 | 183 | 173 | 182 | 177 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 1942 | 1939 | 1904 | 1969 | 1915 | 1984 |
| Tmin | 1947 | 1940 | 1915 | 1973 | 1918 | 1985 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 188 | 190 | 210 | 215 | 210 | 217 |
| Humidity/Visibility | 182 | 182 | 204 | 207 | 204 | 213 |
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. |
