Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 1846 | 1672 | 1848 | 1808 | 1860 | 1816 |
| Tmin | 1856 | 1679 | 1856 | 1809 | 1863 | 1819 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 158 | 141 | 156 | 172 | 183 | 180 |
| Humidity/Visibility | 152 | 138 | 149 | 165 | 175 | 172 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 1871 | 1870 | 1816 | 1874 | 1822 | 1884 |
| Tmin | 1883 | 1879 | 1825 | 1877 | 1829 | 1887 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 187 | 188 | 180 | 184 | 180 | 186 |
| Humidity/Visibility | 175 | 174 | 167 | 173 | 176 | 183 |
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. |
