Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 707 | 632 | 704 | 685 | 710 | 694 |
| Tmin | 710 | 638 | 709 | 689 | 708 | 702 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 64 | 59 | 62 | 62 | 67 | 73 |
| Υγρασία/Ορατότητα | 59 | 51 | 60 | 58 | 60 | 67 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 734 | 722 | 712 | 736 | 699 | 733 |
| Tmin | 732 | 727 | 712 | 736 | 706 | 739 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 98 | 98 | 102 | 103 | 92 | 99 |
| Υγρασία/Ορατότητα | 85 | 77 | 81 | 81 | 73 | 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. |
