Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 247 | 221 | 248 | 255 | 279 | 269 |
Tmin | 279 | 250 | 278 | 286 | 310 | 299 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 95 | 89 | 95 | 109 | 124 | 122 |
Humidity/Visibility | 92 | 83 | 91 | 104 | 123 | 118 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 276 | 276 | 270 | 272 | 267 | 275 |
Tmin | 310 | 310 | 300 | 303 | 298 | 310 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 127 | 129 | 120 | 125 | 122 | 126 |
Humidity/Visibility | 122 | 121 | 118 | 116 | 118 | 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. |