Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 590 | 554 | 611 | 591 | 609 | 589 |
Tmin | 598 | 555 | 616 | 595 | 615 | 592 |
Duration of sunshine | 186 | 226 | 279 | 270 | 310 | 300 |
Precipitation | 193 | 168 | 189 | 184 | 188 | 182 |
Humidity/Visibility | 175 | 163 | 179 | 175 | 180 | 176 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 606 | 605 | 611 | 629 | 620 | 607 |
Tmin | 604 | 597 | 612 | 637 | 616 | 610 |
Duration of sunshine | 248 | 248 | 240 | 279 | 270 | 248 |
Precipitation | 186 | 192 | 216 | 214 | 212 | 194 |
Humidity/Visibility | 174 | 170 | 196 | 203 | 198 | 182 |
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. |