Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 739 | 679 | 740 | 729 | 755 | 729 |
Tmin | 738 | 672 | 754 | 726 | 755 | 731 |
Duration of sunshine | 93 | 85 | 155 | 120 | 93 | 60 |
Precipitation | 718 | 654 | 708 | 737 | 747 | 727 |
Humidity/Visibility | 88 | 91 | 97 | 97 | 97 | 92 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 774 | 758 | 725 | 727 | 711 | 745 |
Tmin | 774 | 755 | 724 | 724 | 706 | 737 |
Duration of sunshine | 93 | 93 | 240 | 124 | 90 | 155 |
Precipitation | 756 | 747 | 712 | 736 | 742 | 753 |
Humidity/Visibility | 113 | 100 | 90 | 73 | 77 | 89 |
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. |