Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 711 | 644 | 711 | 701 | 740 | 718 |
Tmin | 710 | 644 | 712 | 701 | 740 | 719 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 66 | 59 | 62 | 76 | 92 | 89 |
Humidity/Visibility | 60 | 55 | 60 | 72 | 87 | 87 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 743 | 735 | 713 | 739 | 714 | 743 |
Tmin | 739 | 740 | 714 | 739 | 717 | 744 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 96 | 92 | 92 | 90 | 90 | 97 |
Humidity/Visibility | 91 | 88 | 84 | 85 | 85 | 92 |
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. |