Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 483 | 451 | 496 | 480 | 485 | 480 |
Tmin | 484 | 449 | 496 | 480 | 485 | 479 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 62 | 57 | 64 | 64 | 62 | 62 |
Humidity/Visibility | 61 | 55 | 61 | 59 | 61 | 59 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 496 | 496 | 473 | 520 | 507 | 520 |
Tmin | 496 | 496 | 472 | 521 | 506 | 527 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 63 | 65 | 64 | 91 | 91 | 93 |
Humidity/Visibility | 61 | 61 | 63 | 87 | 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. |