Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 621 | 568 | 633 | 611 | 663 | 645 |
| Tmin | 621 | 570 | 632 | 604 | 656 | 642 |
| Διάρκεια Ηλιοφάνειας | 84 | 86 | 98 | 85 | 121 | 118 |
| Υετός | 594 | 553 | 597 | 602 | 634 | 610 |
| Υγρασία/Ορατότητα | 97 | 96 | 107 | 101 | 138 | 137 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 657 | 657 | 631 | 656 | 626 | 634 |
| Tmin | 664 | 656 | 631 | 660 | 619 | 641 |
| Διάρκεια Ηλιοφάνειας | 123 | 114 | 113 | 130 | 104 | 105 |
| Υετός | 622 | 635 | 611 | 631 | 609 | 163 |
| Υγρασία/Ορατότητα | 139 | 125 | 125 | 132 | 115 | 116 |
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. |
