Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 767 | 687 | 772 | 746 | 767 | 748 |
Tmin | 773 | 692 | 771 | 748 | 769 | 745 |
Duration of sunshine | 183 | 158 | 179 | 178 | 178 | 174 |
Precipitation | 196 | 186 | 197 | 187 | 194 | 184 |
Humidity/Visibility | 181 | 158 | 183 | 177 | 182 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 765 | 768 | 772 | 786 | 758 | 805 |
Tmin | 767 | 773 | 773 | 788 | 759 | 801 |
Duration of sunshine | 178 | 183 | 202 | 197 | 190 | 211 |
Precipitation | 193 | 198 | 218 | 229 | 213 | 231 |
Humidity/Visibility | 180 | 182 | 203 | 203 | 203 | 212 |
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. |