Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 594 | 528 | 599 | 602 | 643 | 616 |
Tmin | 539 | 477 | 535 | 528 | 548 | 516 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 128 | 116 | 130 | 137 | 159 | 150 |
Humidity/Visibility | 75 | 64 | 86 | 101 | 126 | 120 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 633 | 608 | 585 | 610 | 585 | 584 |
Tmin | 549 | 548 | 541 | 544 | 520 | 515 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 160 | 156 | 156 | 154 | 153 | 138 |
Humidity/Visibility | 114 | 112 | 109 | 116 | 107 | 97 |
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. |