Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 523 | 477 | 523 | 509 | 545 | 510 |
Tmin | 529 | 493 | 541 | 528 | 546 | 532 |
Duration of sunshine | 85 | 93 | 102 | 103 | 109 | 111 |
Precipitation | 436 | 403 | 438 | 433 | 447 | 434 |
Humidity/Visibility | 72 | 72 | 78 | 76 | 83 | 76 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 525 | 538 | 496 | 519 | 499 | 526 |
Tmin | 532 | 548 | 516 | 529 | 502 | 535 |
Duration of sunshine | 96 | 109 | 91 | 95 | 80 | 91 |
Precipitation | 449 | 440 | 428 | 441 | 427 | 458 |
Humidity/Visibility | 76 | 83 | 67 | 69 | 63 | 73 |
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. |