Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 986 | 895 | 980 | 965 | 1007 | 977 |
Tmin | 937 | 846 | 932 | 902 | 935 | 906 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 63 | 59 | 65 | 80 | 98 | 93 |
Humidity/Visibility | 58 | 54 | 53 | 69 | 81 | 80 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1014 | 1011 | 965 | 987 | 964 | 1010 |
Tmin | 932 | 940 | 900 | 932 | 900 | 933 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 98 | 97 | 91 | 97 | 92 | 102 |
Humidity/Visibility | 88 | 84 | 78 | 72 | 75 | 83 |
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. |