Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 69 | 68 | 83 | 105 | 110 | 108 |
Tmin | 77 | 64 | 80 | 104 | 110 | 108 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 100 | 93 | 104 | 118 | 128 | 118 |
Humidity/Visibility | 76 | 65 | 83 | 101 | 110 | 107 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 105 | 118 | 111 | 101 | 115 | 147 |
Tmin | 114 | 111 | 114 | 98 | 112 | 148 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 120 | 127 | 118 | 126 | 142 | 160 |
Humidity/Visibility | 108 | 111 | 112 | 101 | 110 | 146 |
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. |