Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 453 | 407 | 457 | 447 | 461 | 454 |
Tmin | 460 | 411 | 462 | 449 | 461 | 460 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 64 | 59 | 62 | 62 | 69 | 73 |
Humidity/Visibility | 57 | 50 | 59 | 56 | 56 | 66 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 485 | 478 | 475 | 488 | 463 | 484 |
Tmin | 480 | 478 | 472 | 488 | 466 | 492 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 98 | 94 | 102 | 99 | 92 | 99 |
Humidity/Visibility | 85 | 75 | 79 | 79 | 73 | 88 |
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. |