Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 547 | 483 | 541 | 520 | 550 | 544 |
| Tmin | 552 | 497 | 540 | 525 | 547 | 562 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 498 | 449 | 498 | 485 | 517 | 511 |
| Υγρασία/Ορατότητα | 51 | 51 | 53 | 46 | 56 | 74 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 566 | 543 | 526 | 562 | 543 | 566 |
| Tmin | 576 | 551 | 537 | 566 | 540 | 573 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 533 | 545 | 536 | 531 | 522 | 536 |
| Υγρασία/Ορατότητα | 79 | 65 | 62 | 71 | 67 | 76 |
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. |
