Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 681 | 615 | 680 | 660 | 681 | 658 |
Tmin | 682 | 614 | 682 | 659 | 680 | 659 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 655 | 588 | 655 | 640 | 652 | 632 |
Humidity/Visibility | 61 | 56 | 60 | 57 | 59 | 58 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 681 | 678 | 670 | 691 | 658 | 682 |
Tmin | 681 | 679 | 670 | 690 | 660 | 682 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 655 | 683 | 646 | 682 | 690 | 704 |
Humidity/Visibility | 60 | 54 | 69 | 85 | 88 | 90 |
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. |