Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 682 | 616 | 682 | 660 | 682 | 660 |
Tmin | 682 | 616 | 682 | 660 | 682 | 660 |
Duration of sunshine | 248 | 226 | 248 | 270 | 310 | 240 |
Precipitation | 35 | 31 | 36 | 32 | 31 | 33 |
Humidity/Visibility | 29 | 27 | 29 | 29 | 32 | 33 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 682 | 682 | 660 | 682 | 660 | 682 |
Tmin | 682 | 682 | 660 | 682 | 660 | 682 |
Duration of sunshine | 310 | 279 | 300 | 310 | 210 | 248 |
Precipitation | 35 | 32 | 35 | 32 | 37 | 49 |
Humidity/Visibility | 32 | 31 | 31 | 30 | 58 | 47 |
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. |