Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 741 | 670 | 742 | 717 | 735 | 718 |
Tmin | 741 | 669 | 740 | 719 | 743 | 718 |
Duration of sunshine | 181 | 163 | 182 | 176 | 183 | 173 |
Precipitation | 186 | 169 | 189 | 181 | 186 | 180 |
Humidity/Visibility | 185 | 166 | 184 | 179 | 184 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 737 | 740 | 726 | 765 | 746 | 771 |
Tmin | 743 | 744 | 732 | 765 | 745 | 771 |
Duration of sunshine | 182 | 184 | 189 | 207 | 203 | 212 |
Precipitation | 186 | 194 | 204 | 215 | 210 | 217 |
Humidity/Visibility | 184 | 184 | 190 | 208 | 207 | 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. |