Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 806 | 727 | 806 | 779 | 805 | 780 |
Tmin | 804 | 729 | 805 | 779 | 806 | 780 |
Duration of sunshine | 336 | 310 | 370 | 387 | 433 | 420 |
Precipitation | 155 | 141 | 155 | 151 | 155 | 150 |
Humidity/Visibility | 154 | 140 | 154 | 149 | 153 | 149 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 800 | 803 | 780 | 799 | 779 | 806 |
Tmin | 801 | 806 | 779 | 801 | 776 | 805 |
Duration of sunshine | 397 | 372 | 357 | 393 | 326 | 370 |
Precipitation | 153 | 157 | 154 | 153 | 150 | 155 |
Humidity/Visibility | 149 | 153 | 148 | 149 | 147 | 153 |
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. |