Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 2097 | 1895 | 2098 | 2033 | 2085 | 2031 |
| Tmin | 2101 | 1899 | 2105 | 2033 | 2085 | 2033 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 187 | 171 | 187 | 182 | 186 | 180 |
| Humidity/Visibility | 176 | 159 | 176 | 171 | 172 | 171 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 2100 | 2093 | 2061 | 2128 | 2058 | 2127 |
| Tmin | 2104 | 2101 | 2064 | 2129 | 2067 | 2134 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 188 | 192 | 211 | 215 | 210 | 217 |
| Humidity/Visibility | 171 | 172 | 192 | 201 | 200 | 213 |
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. |
