Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 824 | 737 | 835 | 808 | 825 | 784 |
Tmin | 858 | 762 | 846 | 823 | 863 | 824 |
Duration of sunshine | 259 | 221 | 255 | 255 | 270 | 250 |
Precipitation | 677 | 614 | 673 | 645 | 657 | 646 |
Humidity/Visibility | 167 | 150 | 164 | 161 | 169 | 155 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 816 | 811 | 822 | 857 | 832 | 849 |
Tmin | 857 | 865 | 859 | 880 | 854 | 887 |
Duration of sunshine | 262 | 266 | 303 | 309 | 278 | 292 |
Precipitation | 663 | 667 | 686 | 698 | 674 | 703 |
Humidity/Visibility | 166 | 163 | 182 | 190 | 186 | 197 |
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. |