Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 667 | 602 | 658 | 654 | 671 | 651 |
Tmin | 670 | 596 | 655 | 641 | 678 | 646 |
Duration of sunshine | 39 | 30 | 31 | 40 | 58 | 46 |
Precipitation | 669 | 604 | 665 | 677 | 686 | 665 |
Humidity/Visibility | 69 | 75 | 76 | 88 | 83 | 74 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 677 | 676 | 653 | 675 | 652 | 671 |
Tmin | 671 | 676 | 654 | 670 | 649 | 676 |
Duration of sunshine | 51 | 56 | 54 | 50 | 39 | 44 |
Precipitation | 698 | 678 | 649 | 676 | 657 | 162 |
Humidity/Visibility | 89 | 73 | 70 | 74 | 98 | 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. |