Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 318 | 287 | 315 | 321 | 349 | 340 |
Tmin | 315 | 283 | 319 | 326 | 350 | 337 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 93 | 85 | 94 | 108 | 126 | 120 |
Humidity/Visibility | 92 | 84 | 92 | 104 | 122 | 119 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 340 | 334 | 320 | 346 | 343 | 344 |
Tmin | 344 | 331 | 318 | 346 | 343 | 348 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 127 | 127 | 120 | 124 | 120 | 124 |
Humidity/Visibility | 123 | 122 | 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. |