Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 751 | 672 | 750 | 749 | 771 | 752 |
Tmin | 752 | 675 | 745 | 747 | 783 | 754 |
Duration of sunshine | 97 | 86 | 94 | 117 | 126 | 124 |
Precipitation | 716 | 648 | 714 | 717 | 751 | 724 |
Humidity/Visibility | 77 | 66 | 72 | 89 | 98 | 101 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 778 | 778 | 753 | 772 | 732 | 757 |
Tmin | 766 | 771 | 756 | 764 | 727 | 760 |
Duration of sunshine | 114 | 121 | 125 | 111 | 96 | 108 |
Precipitation | 754 | 750 | 737 | 757 | 705 | 156 |
Humidity/Visibility | 99 | 97 | 99 | 121 | 97 | 110 |
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. |