Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 497 | 475 | 538 | 550 | 558 | 539 |
| Tmin | 504 | 496 | 542 | 549 | 567 | 552 |
| Διάρκεια Ηλιοφάνειας | 363 | 289 | 349 | 372 | 384 | 374 |
| Υετός | 128 | 118 | 128 | 148 | 161 | 152 |
| Υγρασία/Ορατότητα | 114 | 99 | 113 | 131 | 141 | 136 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 563 | 568 | 548 | 560 | 533 | 548 |
| Tmin | 571 | 568 | 557 | 561 | 529 | 551 |
| Διάρκεια Ηλιοφάνειας | 371 | 255 | 343 | 345 | 322 | 392 |
| Υετός | 155 | 163 | 153 | 150 | 124 | 129 |
| Υγρασία/Ορατότητα | 137 | 131 | 140 | 134 | 113 | 121 |
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. |
