Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 90 | 75 | 84 | 94 | 112 | 106 |
Tmin | 90 | 67 | 78 | 98 | 110 | 106 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 151 | 154 | 149 | 181 | 181 | 174 |
Humidity/Visibility | 77 | 71 | 79 | 90 | 101 | 97 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 75 | 81 | 77 | 73 | 70 | 71 |
Tmin | 80 | 77 | 74 | 72 | 69 | 79 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 185 | 178 | 182 | 178 | 176 | 185 |
Humidity/Visibility | 91 | 100 | 96 | 89 | 89 | 88 |
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. |