Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 606 | 546 | 594 | 602 | 635 | 615 |
Tmin | 612 | 556 | 610 | 613 | 642 | 624 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 130 | 110 | 128 | 146 | 155 | 148 |
Humidity/Visibility | 78 | 69 | 77 | 92 | 103 | 101 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 619 | 579 | 558 | 564 | 552 | 557 |
Tmin | 631 | 588 | 562 | 585 | 569 | 574 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 155 | 165 | 156 | 149 | 124 | 146 |
Humidity/Visibility | 102 | 103 | 102 | 94 | 82 | 92 |
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. |