Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 829 | 756 | 834 | 809 | 829 | 806 |
Tmin | 831 | 757 | 837 | 809 | 837 | 809 |
Duration of sunshine | 124 | 113 | 93 | 120 | 124 | 150 |
Precipitation | 183 | 169 | 187 | 181 | 186 | 180 |
Humidity/Visibility | 182 | 167 | 183 | 176 | 184 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 833 | 835 | 833 | 865 | 837 | 866 |
Tmin | 837 | 836 | 834 | 864 | 836 | 867 |
Duration of sunshine | 124 | 126 | 160 | 186 | 120 | 93 |
Precipitation | 188 | 190 | 208 | 215 | 211 | 217 |
Humidity/Visibility | 184 | 182 | 205 | 210 | 206 | 210 |
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. |