Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 603 | 556 | 617 | 595 | 613 | 597 |
Tmin | 603 | 557 | 618 | 594 | 615 | 594 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 186 | 170 | 186 | 181 | 185 | 180 |
Humidity/Visibility | 185 | 163 | 183 | 177 | 183 | 177 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 615 | 607 | 624 | 643 | 626 | 651 |
Tmin | 614 | 608 | 624 | 642 | 625 | 647 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 186 | 186 | 211 | 214 | 212 | 217 |
Humidity/Visibility | 182 | 180 | 205 | 209 | 205 | 215 |
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. |