Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 775 | 700 | 775 | 765 | 806 | 779 |
Tmin | 773 | 700 | 773 | 765 | 805 | 780 |
Duration of sunshine | 93 | 84 | 93 | 120 | 124 | 120 |
Precipitation | 682 | 617 | 684 | 677 | 713 | 690 |
Humidity/Visibility | 92 | 84 | 92 | 104 | 123 | 119 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 806 | 805 | 780 | 802 | 778 | 806 |
Tmin | 802 | 804 | 779 | 801 | 779 | 805 |
Duration of sunshine | 124 | 124 | 120 | 124 | 120 | 124 |
Precipitation | 715 | 715 | 692 | 710 | 690 | 713 |
Humidity/Visibility | 122 | 122 | 118 | 118 | 118 | 124 |
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. |