Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 768 | 692 | 770 | 746 | 774 | 747 |
Tmin | 772 | 696 | 771 | 746 | 775 | 744 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 713 | 643 | 713 | 691 | 713 | 687 |
Humidity/Visibility | 184 | 164 | 181 | 178 | 184 | 176 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 773 | 773 | 776 | 795 | 765 | 803 |
Tmin | 773 | 775 | 775 | 798 | 771 | 801 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 713 | 717 | 720 | 740 | 716 | 743 |
Humidity/Visibility | 183 | 184 | 206 | 208 | 200 | 213 |
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. |