Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 832 | 752 | 832 | 805 | 834 | 809 |
Tmin | 836 | 754 | 836 | 805 | 837 | 807 |
Duration of sunshine | 432 | 416 | 400 | 444 | 432 | 472 |
Precipitation | 190 | 172 | 190 | 183 | 186 | 182 |
Humidity/Visibility | 175 | 159 | 176 | 177 | 183 | 171 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 833 | 834 | 833 | 859 | 833 | 864 |
Tmin | 834 | 838 | 834 | 857 | 834 | 864 |
Duration of sunshine | 493 | 492 | 474 | 482 | 471 | 456 |
Precipitation | 186 | 192 | 216 | 215 | 210 | 224 |
Humidity/Visibility | 177 | 177 | 198 | 200 | 196 | 203 |
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. |