Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 749 | 671 | 753 | 731 | 760 | 729 |
| Tmin | 731 | 664 | 746 | 729 | 762 | 735 |
| Διάρκεια Ηλιοφάνειας | 352 | 236 | 298 | 231 | 347 | 236 |
| Υετός | 648 | 598 | 652 | 662 | 688 | 688 |
| Υγρασία/Ορατότητα | 88 | 85 | 101 | 102 | 102 | 96 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 769 | 762 | 745 | 765 | 719 | 748 |
| Tmin | 760 | 752 | 740 | 762 | 704 | 745 |
| Διάρκεια Ηλιοφάνειας | 281 | 312 | 336 | 311 | 249 | 335 |
| Υετός | 694 | 698 | 681 | 711 | 660 | 671 |
| Υγρασία/Ορατότητα | 102 | 99 | 106 | 109 | 72 | 88 |
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. |
