Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 831 | 749 | 833 | 808 | 834 | 806 |
Tmin | 832 | 749 | 829 | 802 | 834 | 804 |
Duration of sunshine | 270 | 243 | 299 | 289 | 301 | 261 |
Precipitation | 806 | 729 | 806 | 783 | 810 | 782 |
Humidity/Visibility | 158 | 144 | 156 | 153 | 160 | 153 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 829 | 823 | 835 | 855 | 833 | 855 |
Tmin | 833 | 822 | 835 | 862 | 832 | 861 |
Duration of sunshine | 303 | 290 | 321 | 296 | 318 | 326 |
Precipitation | 807 | 803 | 813 | 837 | 812 | 839 |
Humidity/Visibility | 164 | 158 | 180 | 183 | 177 | 184 |
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. |