Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 619 | 559 | 620 | 610 | 647 | 627 |
Tmin | 620 | 560 | 619 | 611 | 647 | 628 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 532 | 477 | 527 | 526 | 555 | 539 |
Humidity/Visibility | 59 | 56 | 61 | 72 | 86 | 88 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 650 | 641 | 623 | 643 | 621 | 650 |
Tmin | 644 | 645 | 622 | 644 | 625 | 649 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 560 | 559 | 540 | 557 | 544 | 565 |
Humidity/Visibility | 91 | 86 | 83 | 84 | 84 | 90 |
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. |