Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 884 | 827 | 923 | 882 | 913 | 890 |
Tmin | 896 | 833 | 925 | 896 | 921 | 895 |
Duration of sunshine | 178 | 154 | 172 | 170 | 169 | 160 |
Precipitation | 504 | 455 | 503 | 483 | 500 | 486 |
Humidity/Visibility | 137 | 121 | 141 | 130 | 137 | 132 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 912 | 909 | 907 | 938 | 896 | 899 |
Tmin | 917 | 914 | 918 | 952 | 908 | 919 |
Duration of sunshine | 163 | 164 | 152 | 182 | 158 | 167 |
Precipitation | 500 | 504 | 522 | 535 | 516 | 225 |
Humidity/Visibility | 129 | 121 | 143 | 159 | 149 | 160 |
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. |