Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 1915 | 1731 | 1919 | 1866 | 1950 | 1879 |
| Tmin | 1861 | 1680 | 1863 | 1802 | 1860 | 1800 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 62 | 58 | 66 | 85 | 95 | 93 |
| Humidity/Visibility | 58 | 55 | 58 | 69 | 88 | 81 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 1939 | 1945 | 1883 | 1945 | 1883 | 1947 |
| Tmin | 1867 | 1862 | 1800 | 1861 | 1800 | 1860 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 100 | 97 | 94 | 91 | 94 | 99 |
| Humidity/Visibility | 86 | 87 | 83 | 80 | 82 | 86 |
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. |
