Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 741 | 681 | 737 | 737 | 756 | 730 |
| Tmin | 738 | 675 | 739 | 737 | 755 | 730 |
| Διάρκεια Ηλιοφάνειας | 155 | 113 | 155 | 60 | 155 | 30 |
| Υετός | 702 | 624 | 687 | 708 | 713 | 691 |
| Υγρασία/Ορατότητα | 86 | 91 | 86 | 103 | 99 | 99 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 759 | 752 | 720 | 733 | 712 | 761 |
| Tmin | 759 | 750 | 721 | 727 | 711 | 751 |
| Διάρκεια Ηλιοφάνειας | 155 | 62 | 210 | 62 | 90 | 186 |
| Υετός | 708 | 717 | 686 | 718 | 709 | 216 |
| Υγρασία/Ορατότητα | 101 | 95 | 88 | 81 | 81 | 101 |
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. |
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