Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 899 | 812 | 899 | 888 | 932 | 886 |
Tmin | 973 | 868 | 960 | 938 | 959 | 935 |
Duration of sunshine | 43 | 27 | 39 | 42 | 37 | 43 |
Precipitation | 118 | 122 | 141 | 160 | 158 | 138 |
Humidity/Visibility | 41 | 38 | 40 | 56 | 61 | 46 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 926 | 933 | 894 | 922 | 896 | 919 |
Tmin | 964 | 975 | 937 | 963 | 925 | 967 |
Duration of sunshine | 44 | 60 | 46 | 35 | 34 | 30 |
Precipitation | 151 | 148 | 160 | 151 | 173 | 180 |
Humidity/Visibility | 55 | 67 | 64 | 60 | 55 | 60 |
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. |