Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 802 | 721 | 803 | 774 | 799 | 775 |
Tmin | 801 | 716 | 801 | 774 | 802 | 773 |
Duration of sunshine | 256 | 225 | 286 | 272 | 289 | 283 |
Precipitation | 810 | 731 | 814 | 785 | 810 | 780 |
Humidity/Visibility | 181 | 164 | 183 | 176 | 182 | 178 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 798 | 797 | 802 | 827 | 800 | 825 |
Tmin | 801 | 804 | 804 | 826 | 802 | 830 |
Duration of sunshine | 296 | 295 | 315 | 255 | 288 | 283 |
Precipitation | 805 | 812 | 818 | 841 | 814 | 837 |
Humidity/Visibility | 182 | 182 | 204 | 209 | 204 | 211 |
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. |