Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 729 | 656 | 731 | 694 | 731 | 713 |
Tmin | 733 | 660 | 730 | 701 | 731 | 710 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 654 | 591 | 655 | 631 | 653 | 630 |
Humidity/Visibility | 108 | 95 | 106 | 97 | 108 | 104 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 730 | 758 | 731 | 747 | 722 | 745 |
Tmin | 737 | 755 | 739 | 750 | 724 | 754 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 653 | 685 | 655 | 676 | 652 | 687 |
Humidity/Visibility | 110 | 126 | 125 | 119 | 116 | 122 |
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. |