Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 712 | 641 | 712 | 701 | 739 | 718 |
Tmin | 709 | 643 | 710 | 704 | 743 | 715 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 93 | 86 | 96 | 111 | 124 | 122 |
Humidity/Visibility | 91 | 84 | 91 | 104 | 122 | 118 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 738 | 742 | 719 | 728 | 717 | 738 |
Tmin | 743 | 738 | 720 | 733 | 717 | 744 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 126 | 129 | 120 | 124 | 120 | 125 |
Humidity/Visibility | 122 | 121 | 118 | 117 | 118 | 123 |
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. |