Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 543 | 492 | 563 | 575 | 602 | 575 |
| Tmin | 540 | 490 | 551 | 560 | 581 | 563 |
| Duration of sunshine | 186 | 141 | 155 | 180 | 155 | 180 |
| Precipitation | 0 | 0 | 0 | 0 | 0 | 0 |
| Humidity/Visibility | 0 | 0 | 0 | 0 | 0 | 0 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 597 | 594 | 573 | 604 | 556 | 561 |
| Tmin | 582 | 580 | 567 | 590 | 545 | 553 |
| Duration of sunshine | 248 | 217 | 210 | 217 | 180 | 217 |
| Precipitation | 0 | 0 | 0 | 0 | 0 | 0 |
| Humidity/Visibility | 0 | 0 | 0 | 0 | 0 | 0 |
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. |
