Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 255 | 224 | 255 | 248 | 261 | 254 |
Tmin | 257 | 226 | 263 | 254 | 264 | 250 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 93 | 87 | 95 | 109 | 126 | 124 |
Humidity/Visibility | 92 | 83 | 92 | 103 | 122 | 118 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 260 | 255 | 249 | 276 | 273 | 279 |
Tmin | 266 | 258 | 248 | 277 | 274 | 287 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 126 | 127 | 120 | 126 | 120 | 124 |
Humidity/Visibility | 122 | 121 | 117 | 117 | 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. |