Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 174 | 156 | 179 | 169 | 174 | 173 |
Tmin | 179 | 161 | 183 | 175 | 184 | 173 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 188 | 168 | 186 | 187 | 190 | 180 |
Humidity/Visibility | 180 | 163 | 182 | 176 | 181 | 177 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 169 | 173 | 203 | 197 | 169 | 179 |
Tmin | 174 | 169 | 204 | 196 | 174 | 182 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 188 | 200 | 212 | 214 | 188 | 192 |
Humidity/Visibility | 175 | 171 | 203 | 197 | 173 | 181 |
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. |