Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 496 | 448 | 496 | 480 | 496 | 480 |
| Tmin | 496 | 448 | 496 | 480 | 496 | 480 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 0 | 0 | 0 | 29 | 31 | 30 |
| Υγρασία/Ορατότητα | 0 | 0 | 0 | 23 | 30 | 30 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 496 | 496 | 480 | 496 | 480 | 496 |
| Tmin | 496 | 496 | 480 | 496 | 480 | 496 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 22 | 0 | 4 | 31 | 30 | 31 |
| Υγρασία/Ορατότητα | 21 | 0 | 3 | 31 | 30 | 31 |
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. |
