Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 834 | 753 | 832 | 806 | 832 | 808 |
Tmin | 835 | 752 | 831 | 805 | 836 | 806 |
Duration of sunshine | 239 | 215 | 206 | 231 | 276 | 229 |
Precipitation | 186 | 169 | 187 | 181 | 186 | 180 |
Humidity/Visibility | 184 | 165 | 182 | 176 | 183 | 176 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 830 | 835 | 836 | 863 | 838 | 864 |
Tmin | 836 | 833 | 835 | 865 | 837 | 867 |
Duration of sunshine | 276 | 273 | 326 | 298 | 291 | 302 |
Precipitation | 187 | 190 | 210 | 215 | 211 | 217 |
Humidity/Visibility | 182 | 183 | 203 | 208 | 204 | 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. |