Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 1643 | 1495 | 1643 | 1590 | 1643 | 1590 |
| Tmin | 1643 | 1495 | 1643 | 1590 | 1643 | 1590 |
| Διάρκεια Ηλιοφάνειας | 1302 | 1183 | 1301 | 1258 | 1301 | 1258 |
| Υετός | 498 | 448 | 496 | 481 | 496 | 480 |
| Υγρασία/Ορατότητα | 184 | 167 | 185 | 179 | 185 | 179 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 1643 | 1643 | 1590 | 1643 | 1590 | 1643 |
| Tmin | 1643 | 1643 | 1590 | 1643 | 1590 | 1643 |
| Διάρκεια Ηλιοφάνειας | 1301 | 1305 | 1289 | 1325 | 1287 | 1332 |
| Υετός | 498 | 500 | 510 | 525 | 510 | 527 |
| Υγρασία/Ορατότητα | 184 | 184 | 207 | 210 | 207 | 215 |
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. |
