Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 710 | 620 | 676 | 655 | 676 | 645 |
Tmin | 708 | 630 | 678 | 656 | 681 | 652 |
Duration of sunshine | 93 | 84 | 93 | 90 | 93 | 90 |
Precipitation | 745 | 668 | 742 | 717 | 730 | 706 |
Humidity/Visibility | 138 | 126 | 143 | 130 | 130 | 129 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 676 | 691 | 678 | 697 | 663 | 679 |
Tmin | 676 | 689 | 677 | 697 | 661 | 680 |
Duration of sunshine | 93 | 124 | 120 | 124 | 120 | 93 |
Precipitation | 734 | 770 | 749 | 760 | 718 | 748 |
Humidity/Visibility | 134 | 154 | 161 | 155 | 133 | 143 |
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. |