Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 719 | 646 | 723 | 697 | 723 | 693 |
Tmin | 730 | 662 | 732 | 709 | 735 | 706 |
Duration of sunshine | 62 | 28 | 62 | 60 | 62 | 60 |
Precipitation | 742 | 671 | 743 | 718 | 742 | 715 |
Humidity/Visibility | 142 | 127 | 146 | 135 | 144 | 138 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 718 | 746 | 728 | 740 | 707 | 731 |
Tmin | 729 | 748 | 740 | 741 | 707 | 733 |
Duration of sunshine | 0 | 31 | 60 | 62 | 0 | 31 |
Precipitation | 740 | 775 | 747 | 760 | 719 | 746 |
Humidity/Visibility | 141 | 158 | 167 | 158 | 137 | 146 |
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. |