Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 742 | 664 | 740 | 717 | 741 | 719 |
Tmin | 740 | 663 | 740 | 714 | 741 | 717 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 190 | 178 | 198 | 194 | 187 | 184 |
Humidity/Visibility | 178 | 159 | 177 | 169 | 175 | 175 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 736 | 739 | 733 | 768 | 745 | 765 |
Tmin | 738 | 733 | 737 | 765 | 742 | 765 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 190 | 193 | 214 | 221 | 219 | 218 |
Humidity/Visibility | 182 | 175 | 198 | 204 | 196 | 205 |
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. |