Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 1928 | 1750 | 1941 | 1878 | 1920 | 1879 |
| Tmin | 1928 | 1754 | 1933 | 1875 | 1916 | 1869 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 145 | 127 | 145 | 132 | 138 | 135 |
| Humidity/Visibility | 108 | 99 | 110 | 111 | 100 | 110 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 1942 | 1962 | 1906 | 1969 | 1909 | 1964 |
| Tmin | 1933 | 1949 | 1896 | 1963 | 1896 | 1957 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 144 | 177 | 172 | 173 | 174 | 185 |
| Humidity/Visibility | 115 | 140 | 137 | 135 | 135 | 136 |
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. |
