Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 570 | 522 | 599 | 588 | 608 | 578 |
Tmin | 568 | 520 | 600 | 591 | 609 | 580 |
Duration of sunshine | 155 | 114 | 155 | 60 | 155 | 90 |
Precipitation | 512 | 458 | 553 | 563 | 584 | 531 |
Humidity/Visibility | 73 | 73 | 97 | 104 | 104 | 97 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 599 | 579 | 553 | 559 | 541 | 575 |
Tmin | 596 | 575 | 559 | 552 | 540 | 570 |
Duration of sunshine | 93 | 124 | 180 | 124 | 90 | 186 |
Precipitation | 555 | 566 | 522 | 536 | 538 | 553 |
Humidity/Visibility | 96 | 75 | 69 | 65 | 63 | 77 |
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. |