Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 762 | 686 | 759 | 755 | 767 | 746 |
Tmin | 735 | 667 | 729 | 719 | 734 | 716 |
Duration of sunshine | 219 | 179 | 218 | 216 | 216 | 193 |
Precipitation | 608 | 543 | 612 | 624 | 623 | 601 |
Humidity/Visibility | 80 | 74 | 76 | 87 | 85 | 84 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 746 | 771 | 747 | 759 | 753 | 774 |
Tmin | 721 | 742 | 734 | 746 | 723 | 752 |
Duration of sunshine | 187 | 214 | 306 | 212 | 173 | 174 |
Precipitation | 597 | 629 | 619 | 639 | 624 | 219 |
Humidity/Visibility | 71 | 87 | 94 | 83 | 87 | 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. |