Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 715 | 624 | 698 | 680 | 702 | 666 |
Tmin | 720 | 631 | 704 | 681 | 705 | 683 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 93 | 74 | 94 | 117 | 129 | 117 |
Humidity/Visibility | 81 | 57 | 79 | 91 | 108 | 104 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 692 | 699 | 675 | 702 | 677 | 700 |
Tmin | 692 | 698 | 673 | 700 | 677 | 702 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 81 | 91 | 92 | 72 | 55 | 63 |
Humidity/Visibility | 105 | 123 | 125 | 122 | 99 | 110 |
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. |