Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 743 | 671 | 742 | 718 | 742 | 720 |
Tmin | 743 | 672 | 744 | 720 | 744 | 719 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 186 | 169 | 187 | 181 | 186 | 180 |
Humidity/Visibility | 184 | 167 | 184 | 179 | 184 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 739 | 743 | 747 | 769 | 748 | 773 |
Tmin | 743 | 743 | 749 | 769 | 749 | 774 |
Duration of sunshine | 0 | 2 | 10 | 0 | 0 | 0 |
Precipitation | 187 | 190 | 210 | 215 | 211 | 217 |
Humidity/Visibility | 184 | 184 | 207 | 210 | 206 | 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. |