Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 129 | 114 | 130 | 118 | 134 | 129 |
Tmin | 94 | 92 | 92 | 102 | 122 | 102 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 196 | 185 | 208 | 206 | 223 | 230 |
Humidity/Visibility | 106 | 97 | 100 | 95 | 105 | 104 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 105 | 69 | 93 | 113 | 122 | 135 |
Tmin | 104 | 60 | 88 | 93 | 100 | 96 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 217 | 206 | 226 | 243 | 243 | 275 |
Humidity/Visibility | 100 | 66 | 99 | 114 | 111 | 124 |
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. |