Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 677 | 613 | 682 | 682 | 679 | 659 |
Tmin | 678 | 616 | 680 | 680 | 679 | 659 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 683 | 616 | 682 | 686 | 712 | 690 |
Humidity/Visibility | 88 | 82 | 90 | 111 | 121 | 117 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 676 | 678 | 654 | 676 | 657 | 679 |
Tmin | 679 | 682 | 658 | 676 | 656 | 680 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 714 | 714 | 691 | 709 | 694 | 724 |
Humidity/Visibility | 119 | 119 | 115 | 116 | 115 | 120 |
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. |