Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 465 | 451 | 503 | 502 | 527 | 500 |
Tmin | 470 | 455 | 505 | 504 | 534 | 508 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 95 | 85 | 95 | 109 | 124 | 124 |
Humidity/Visibility | 92 | 84 | 91 | 104 | 123 | 118 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 506 | 506 | 471 | 522 | 509 | 524 |
Tmin | 504 | 504 | 471 | 527 | 517 | 533 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 126 | 127 | 120 | 122 | 121 | 124 |
Humidity/Visibility | 122 | 121 | 118 | 117 | 117 | 124 |
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. |