Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 2030 | 1839 | 2036 | 1972 | 2010 | 1959 |
| Tmin | 2032 | 1844 | 2038 | 1973 | 2009 | 1969 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 187 | 169 | 187 | 181 | 186 | 180 |
| Humidity/Visibility | 184 | 165 | 184 | 176 | 181 | 176 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 2028 | 2031 | 1990 | 2062 | 2004 | 2067 |
| Tmin | 2037 | 2031 | 1998 | 2068 | 2009 | 2070 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 187 | 190 | 210 | 215 | 210 | 217 |
| Humidity/Visibility | 180 | 183 | 204 | 208 | 202 | 215 |
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. |
