Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 91 | 81 | 90 | 87 | 92 | 103 |
Tmin | 89 | 81 | 89 | 80 | 89 | 100 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 32 | 25 | 26 | 28 | 29 | 26 |
Humidity/Visibility | 92 | 84 | 91 | 89 | 91 | 102 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 120 | 119 | 118 | 118 | 116 | 121 |
Tmin | 118 | 120 | 120 | 114 | 113 | 122 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 31 | 32 | 30 | 36 | 24 | 32 |
Humidity/Visibility | 121 | 120 | 118 | 117 | 117 | 123 |
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. |