Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 782 | 699 | 779 | 765 | 800 | 765 |
Tmin | 775 | 697 | 780 | 763 | 804 | 770 |
Duration of sunshine | 349 | 290 | 296 | 287 | 336 | 292 |
Precipitation | 654 | 599 | 651 | 666 | 698 | 676 |
Humidity/Visibility | 96 | 86 | 100 | 105 | 116 | 108 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 798 | 795 | 784 | 798 | 750 | 779 |
Tmin | 797 | 787 | 776 | 800 | 742 | 777 |
Duration of sunshine | 310 | 276 | 333 | 336 | 284 | 339 |
Precipitation | 694 | 692 | 691 | 708 | 654 | 667 |
Humidity/Visibility | 115 | 108 | 123 | 116 | 81 | 94 |
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. |