Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 613 | 559 | 618 | 614 | 644 | 626 |
Tmin | 614 | 558 | 614 | 614 | 646 | 627 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 558 | 505 | 558 | 555 | 588 | 570 |
Humidity/Visibility | 60 | 55 | 60 | 72 | 85 | 86 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 643 | 649 | 628 | 640 | 626 | 648 |
Tmin | 638 | 646 | 626 | 643 | 627 | 647 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 590 | 590 | 570 | 585 | 571 | 591 |
Humidity/Visibility | 87 | 90 | 86 | 85 | 86 | 91 |
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. |