Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 73 | 71 | 88 | 83 | 86 | 76 |
Tmin | 74 | 69 | 88 | 83 | 86 | 77 |
Duration of sunshine | 72 | 70 | 88 | 83 | 86 | 76 |
Precipitation | 184 | 167 | 184 | 180 | 182 | 177 |
Humidity/Visibility | 121 | 108 | 120 | 101 | 97 | 106 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 86 | 88 | 85 | 79 | 72 | 89 |
Tmin | 84 | 88 | 85 | 80 | 71 | 93 |
Duration of sunshine | 86 | 87 | 85 | 81 | 72 | 93 |
Precipitation | 185 | 177 | 217 | 199 | 213 | 210 |
Humidity/Visibility | 115 | 108 | 130 | 118 | 126 | 144 |
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. |