Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 732 | 660 | 736 | 700 | 708 | 686 |
Tmin | 734 | 665 | 735 | 698 | 709 | 689 |
Duration of sunshine | 78 | 70 | 99 | 82 | 87 | 79 |
Precipitation | 713 | 644 | 713 | 691 | 716 | 690 |
Humidity/Visibility | 112 | 102 | 115 | 105 | 111 | 109 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 713 | 738 | 713 | 728 | 705 | 735 |
Tmin | 714 | 738 | 712 | 729 | 714 | 735 |
Duration of sunshine | 90 | 116 | 95 | 93 | 71 | 62 |
Precipitation | 715 | 746 | 721 | 737 | 691 | 715 |
Humidity/Visibility | 117 | 139 | 135 | 129 | 109 | 116 |
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. |