Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 512 | 489 | 550 | 560 | 565 | 546 |
Tmin | 517 | 491 | 549 | 559 | 563 | 543 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 132 | 122 | 138 | 158 | 173 | 170 |
Humidity/Visibility | 110 | 101 | 112 | 135 | 138 | 128 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 580 | 582 | 548 | 570 | 555 | 571 |
Tmin | 577 | 582 | 546 | 565 | 557 | 565 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 164 | 171 | 158 | 163 | 160 | 177 |
Humidity/Visibility | 141 | 139 | 129 | 129 | 125 | 128 |
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. |