Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 741 | 670 | 744 | 717 | 742 | 720 |
Tmin | 744 | 670 | 744 | 717 | 744 | 717 |
Duration of sunshine | 62 | 84 | 93 | 90 | 93 | 90 |
Precipitation | 186 | 168 | 187 | 181 | 186 | 180 |
Humidity/Visibility | 184 | 167 | 185 | 178 | 184 | 179 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 741 | 743 | 747 | 765 | 746 | 775 |
Tmin | 742 | 744 | 748 | 767 | 748 | 775 |
Duration of sunshine | 93 | 93 | 90 | 93 | 90 | 93 |
Precipitation | 186 | 190 | 212 | 215 | 210 | 217 |
Humidity/Visibility | 184 | 185 | 206 | 209 | 207 | 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. |