Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 639 | 577 | 641 | 623 | 648 | 620 |
Tmin | 642 | 579 | 644 | 625 | 648 | 624 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 594 | 535 | 593 | 575 | 589 | 570 |
Humidity/Visibility | 72 | 66 | 73 | 73 | 83 | 84 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 644 | 637 | 628 | 648 | 657 | 668 |
Tmin | 639 | 632 | 623 | 646 | 649 | 669 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 591 | 589 | 574 | 591 | 601 | 129 |
Humidity/Visibility | 75 | 66 | 79 | 83 | 96 | 98 |
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. |