Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 615 | 559 | 618 | 611 | 649 | 625 |
Tmin | 560 | 504 | 559 | 541 | 558 | 542 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 589 | 533 | 590 | 593 | 623 | 600 |
Humidity/Visibility | 59 | 55 | 59 | 67 | 88 | 85 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 645 | 647 | 625 | 644 | 623 | 646 |
Tmin | 562 | 559 | 544 | 559 | 540 | 563 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 624 | 628 | 602 | 620 | 605 | 626 |
Humidity/Visibility | 88 | 86 | 83 | 79 | 80 | 85 |
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. |