Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 634 | 582 | 642 | 646 | 662 | 652 |
Tmin | 635 | 579 | 634 | 640 | 659 | 644 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 104 | 99 | 118 | 132 | 157 | 138 |
Humidity/Visibility | 59 | 58 | 61 | 75 | 76 | 79 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 660 | 664 | 652 | 668 | 644 | 670 |
Tmin | 655 | 658 | 645 | 659 | 638 | 660 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 147 | 147 | 140 | 149 | 158 | 153 |
Humidity/Visibility | 79 | 79 | 81 | 74 | 75 | 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. |