Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 744 | 670 | 744 | 719 | 742 | 718 |
Tmin | 742 | 672 | 742 | 717 | 742 | 720 |
Duration of sunshine | 91 | 99 | 129 | 130 | 147 | 145 |
Precipitation | 719 | 644 | 713 | 691 | 717 | 690 |
Humidity/Visibility | 151 | 137 | 153 | 147 | 151 | 148 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 741 | 741 | 719 | 738 | 719 | 742 |
Tmin | 744 | 743 | 719 | 736 | 715 | 741 |
Duration of sunshine | 153 | 151 | 145 | 133 | 99 | 90 |
Precipitation | 713 | 715 | 692 | 713 | 690 | 713 |
Humidity/Visibility | 152 | 151 | 146 | 147 | 146 | 151 |
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. |