Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 558 | 519 | 575 | 561 | 572 | 552 |
Tmin | 568 | 525 | 585 | 563 | 585 | 563 |
Duration of sunshine | 93 | 84 | 93 | 90 | 124 | 90 |
Precipitation | 156 | 140 | 156 | 151 | 155 | 150 |
Humidity/Visibility | 147 | 135 | 153 | 146 | 153 | 148 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 560 | 583 | 578 | 600 | 581 | 576 |
Tmin | 572 | 596 | 587 | 599 | 589 | 579 |
Duration of sunshine | 124 | 93 | 120 | 124 | 120 | 124 |
Precipitation | 160 | 189 | 182 | 183 | 179 | 165 |
Humidity/Visibility | 151 | 164 | 172 | 170 | 161 | 150 |
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. |