Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 865 | 781 | 868 | 836 | 867 | 839 |
Tmin | 866 | 781 | 868 | 837 | 868 | 836 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 808 | 729 | 806 | 782 | 806 | 778 |
Humidity/Visibility | 183 | 166 | 184 | 177 | 184 | 177 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 866 | 867 | 864 | 890 | 867 | 896 |
Tmin | 866 | 869 | 866 | 891 | 867 | 897 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 805 | 808 | 801 | 826 | 801 | 819 |
Humidity/Visibility | 184 | 185 | 205 | 208 | 205 | 214 |
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. |