Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 518 | 464 | 511 | 489 | 514 | 515 |
| Tmin | 508 | 469 | 518 | 494 | 512 | 531 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 64 | 61 | 63 | 65 | 90 | 91 |
| Υγρασία/Ορατότητα | 46 | 48 | 56 | 49 | 53 | 75 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 533 | 524 | 502 | 528 | 506 | 529 |
| Tmin | 545 | 535 | 505 | 528 | 509 | 543 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 96 | 106 | 110 | 94 | 97 | 100 |
| Υγρασία/Ορατότητα | 79 | 72 | 67 | 69 | 71 | 77 |
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. |
