Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 310 | 281 | 313 | 304 | 315 | 304 |
Tmin | 310 | 278 | 312 | 304 | 312 | 309 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 93 | 87 | 95 | 108 | 124 | 120 |
Humidity/Visibility | 92 | 83 | 92 | 104 | 123 | 119 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 315 | 316 | 309 | 338 | 337 | 340 |
Tmin | 316 | 312 | 312 | 339 | 332 | 341 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 127 | 127 | 120 | 122 | 120 | 124 |
Humidity/Visibility | 122 | 121 | 118 | 117 | 118 | 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. |