Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 458 | 450 | 496 | 480 | 478 | 480 |
Tmin | 459 | 449 | 496 | 480 | 480 | 479 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 66 | 57 | 64 | 62 | 62 | 63 |
Humidity/Visibility | 61 | 54 | 61 | 59 | 56 | 57 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 496 | 495 | 463 | 516 | 507 | 520 |
Tmin | 496 | 495 | 463 | 518 | 505 | 527 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 63 | 67 | 64 | 94 | 94 | 93 |
Humidity/Visibility | 61 | 60 | 62 | 84 | 86 | 91 |
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. |