Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 614 | 557 | 614 | 594 | 619 | 618 |
Tmin | 620 | 559 | 618 | 608 | 641 | 625 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 502 | 449 | 498 | 498 | 516 | 507 |
Humidity/Visibility | 59 | 55 | 59 | 64 | 76 | 80 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 630 | 617 | 611 | 635 | 613 | 639 |
Tmin | 641 | 647 | 617 | 644 | 624 | 645 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 529 | 527 | 511 | 526 | 515 | 535 |
Humidity/Visibility | 86 | 81 | 78 | 82 | 80 | 86 |
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. |