Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 367 | 318 | 360 | 342 | 366 | 367 |
Tmin | 366 | 330 | 362 | 352 | 358 | 386 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 62 | 58 | 62 | 66 | 87 | 92 |
Humidity/Visibility | 56 | 53 | 54 | 51 | 61 | 80 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 378 | 360 | 355 | 377 | 363 | 380 |
Tmin | 388 | 371 | 354 | 381 | 361 | 390 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 98 | 116 | 107 | 95 | 101 | 96 |
Humidity/Visibility | 83 | 73 | 66 | 74 | 73 | 83 |
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. |