Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 564 | 509 | 600 | 571 | 600 | 578 |
| Tmin | 555 | 509 | 594 | 576 | 598 | 584 |
| Διάρκεια Ηλιοφάνειας | 155 | 142 | 62 | 120 | 155 | 30 |
| Υετός | 512 | 458 | 538 | 548 | 564 | 528 |
| Υγρασία/Ορατότητα | 69 | 68 | 100 | 93 | 103 | 99 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 595 | 579 | 553 | 559 | 540 | 573 |
| Tmin | 593 | 572 | 560 | 552 | 539 | 564 |
| Διάρκεια Ηλιοφάνειας | 124 | 62 | 150 | 93 | 60 | 217 |
| Υετός | 550 | 551 | 524 | 566 | 546 | 189 |
| Υγρασία/Ορατότητα | 95 | 75 | 75 | 69 | 63 | 72 |
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. |
