Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 239 | 218 | 238 | 243 | 259 | 254 |
Tmin | 240 | 218 | 241 | 247 | 265 | 262 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 95 | 97 | 102 | 114 | 132 | 128 |
Humidity/Visibility | 86 | 81 | 88 | 98 | 118 | 113 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 270 | 265 | 261 | 263 | 259 | 265 |
Tmin | 269 | 266 | 265 | 267 | 258 | 274 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 132 | 131 | 123 | 127 | 139 | 130 |
Humidity/Visibility | 116 | 112 | 114 | 111 | 109 | 119 |
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. |