Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 830 | 753 | 831 | 799 | 823 | 796 |
Tmin | 783 | 710 | 789 | 763 | 787 | 770 |
Duration of sunshine | 93 | 170 | 155 | 120 | 93 | 60 |
Precipitation | 799 | 742 | 804 | 787 | 779 | 757 |
Humidity/Visibility | 126 | 119 | 131 | 116 | 120 | 124 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 834 | 810 | 793 | 817 | 791 | 823 |
Tmin | 808 | 780 | 772 | 779 | 758 | 786 |
Duration of sunshine | 124 | 62 | 210 | 124 | 60 | 155 |
Precipitation | 773 | 788 | 757 | 781 | 769 | 306 |
Humidity/Visibility | 135 | 114 | 119 | 116 | 114 | 126 |
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. |