Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 1916 | 1728 | 1914 | 1845 | 1910 | 1861 |
| Tmin | 1891 | 1702 | 1883 | 1838 | 1881 | 1815 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 81 | 86 | 101 | 110 | 116 | 102 |
| Humidity/Visibility | 37 | 32 | 34 | 29 | 24 | 34 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 1933 | 1934 | 1873 | 1915 | 1871 | 1924 |
| Tmin | 1876 | 1869 | 1826 | 1899 | 1834 | 1911 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 118 | 122 | 126 | 112 | 113 | 127 |
| Humidity/Visibility | 44 | 42 | 45 | 40 | 43 | 45 |
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. |
