Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 372 | 336 | 372 | 372 | 401 | 388 |
| Tmin | 372 | 335 | 371 | 371 | 403 | 390 |
| Διάρκεια Ηλιοφάνειας | 62 | 53 | 61 | 71 | 88 | 89 |
| Υετός | 62 | 69 | 62 | 76 | 93 | 90 |
| Υγρασία/Ορατότητα | 61 | 54 | 61 | 73 | 91 | 89 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 399 | 400 | 388 | 399 | 387 | 402 |
| Tmin | 398 | 401 | 387 | 398 | 388 | 403 |
| Διάρκεια Ηλιοφάνειας | 85 | 90 | 86 | 85 | 85 | 92 |
| Υετός | 97 | 94 | 91 | 90 | 90 | 93 |
| Υγρασία/Ορατότητα | 89 | 91 | 87 | 87 | 87 | 92 |
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. |
