Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 720 | 662 | 752 | 739 | 756 | 733 |
Tmin | 717 | 662 | 757 | 740 | 757 | 737 |
Duration of sunshine | 124 | 114 | 124 | 120 | 155 | 90 |
Precipitation | 640 | 572 | 668 | 698 | 686 | 650 |
Humidity/Visibility | 72 | 73 | 100 | 105 | 101 | 103 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 752 | 720 | 701 | 712 | 693 | 739 |
Tmin | 751 | 716 | 706 | 707 | 692 | 734 |
Duration of sunshine | 62 | 31 | 150 | 62 | 30 | 186 |
Precipitation | 671 | 672 | 647 | 659 | 668 | 183 |
Humidity/Visibility | 99 | 60 | 70 | 64 | 66 | 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. |