Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 793 | 707 | 789 | 788 | 815 | 793 |
Tmin | 794 | 689 | 781 | 789 | 811 | 778 |
Duration of sunshine | 217 | 169 | 186 | 180 | 186 | 180 |
Precipitation | 673 | 592 | 659 | 659 | 698 | 687 |
Humidity/Visibility | 113 | 91 | 107 | 132 | 134 | 126 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 816 | 803 | 779 | 804 | 789 | 813 |
Tmin | 816 | 807 | 778 | 805 | 786 | 798 |
Duration of sunshine | 217 | 217 | 210 | 217 | 150 | 217 |
Precipitation | 689 | 689 | 696 | 706 | 678 | 183 |
Humidity/Visibility | 135 | 120 | 120 | 127 | 126 | 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. |