Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 781 | 714 | 778 | 780 | 810 | 786 |
Tmin | 790 | 717 | 789 | 779 | 827 | 806 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 592 | 540 | 592 | 603 | 629 | 608 |
Humidity/Visibility | 75 | 74 | 76 | 85 | 100 | 96 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 808 | 812 | 781 | 797 | 771 | 805 |
Tmin | 827 | 825 | 804 | 827 | 802 | 813 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 625 | 632 | 606 | 625 | 618 | 636 |
Humidity/Visibility | 99 | 96 | 96 | 92 | 91 | 89 |
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. |