Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 533 | 487 | 525 | 502 | 545 | 526 |
Tmin | 174 | 160 | 168 | 151 | 147 | 160 |
Duration of sunshine | 184 | 164 | 179 | 174 | 184 | 173 |
Precipitation | 186 | 168 | 186 | 183 | 188 | 180 |
Humidity/Visibility | 185 | 167 | 184 | 178 | 184 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 546 | 548 | 550 | 533 | 531 | 574 |
Tmin | 167 | 176 | 173 | 164 | 193 | 202 |
Duration of sunshine | 177 | 180 | 187 | 199 | 199 | 208 |
Precipitation | 186 | 190 | 213 | 223 | 210 | 217 |
Humidity/Visibility | 183 | 183 | 206 | 205 | 204 | 214 |
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. |