Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 431 | 392 | 433 | 419 | 433 | 431 |
Tmin | 433 | 392 | 431 | 420 | 433 | 433 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 62 | 57 | 63 | 61 | 62 | 73 |
Humidity/Visibility | 61 | 56 | 60 | 59 | 62 | 71 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 458 | 465 | 449 | 459 | 445 | 465 |
Tmin | 461 | 463 | 448 | 460 | 449 | 465 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 96 | 96 | 92 | 91 | 90 | 93 |
Humidity/Visibility | 91 | 90 | 87 | 86 | 87 | 92 |
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. |