Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 615 | 554 | 613 | 597 | 642 | 604 |
Tmin | 616 | 553 | 614 | 600 | 645 | 618 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 597 | 536 | 611 | 591 | 651 | 621 |
Humidity/Visibility | 58 | 50 | 50 | 41 | 61 | 71 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 638 | 625 | 615 | 639 | 616 | 641 |
Tmin | 640 | 627 | 618 | 639 | 622 | 640 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 628 | 642 | 612 | 630 | 650 | 650 |
Humidity/Visibility | 54 | 47 | 75 | 81 | 81 | 81 |
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. |