Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 711 | 644 | 711 | 704 | 741 | 718 |
Tmin | 711 | 645 | 711 | 704 | 739 | 718 |
Duration of sunshine | 58 | 54 | 58 | 72 | 85 | 81 |
Precipitation | 558 | 506 | 558 | 555 | 588 | 570 |
Humidity/Visibility | 60 | 56 | 61 | 74 | 90 | 87 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 744 | 738 | 717 | 739 | 717 | 742 |
Tmin | 739 | 738 | 715 | 736 | 715 | 742 |
Duration of sunshine | 83 | 87 | 85 | 77 | 81 | 92 |
Precipitation | 592 | 591 | 570 | 586 | 570 | 591 |
Humidity/Visibility | 91 | 89 | 86 | 87 | 87 | 92 |
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. |