Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 459 | 416 | 458 | 472 | 489 | 475 |
Tmin | 454 | 413 | 461 | 471 | 494 | 475 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 124 | 114 | 123 | 150 | 154 | 150 |
Humidity/Visibility | 119 | 109 | 120 | 143 | 151 | 147 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 494 | 480 | 477 | 482 | 465 | 476 |
Tmin | 490 | 486 | 476 | 482 | 466 | 478 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 157 | 163 | 152 | 153 | 152 | 157 |
Humidity/Visibility | 151 | 145 | 146 | 146 | 137 | 136 |
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. |