Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 713 | 644 | 713 | 705 | 744 | 720 |
| Tmin | 711 | 644 | 711 | 705 | 743 | 720 |
| Διάρκεια Ηλιοφάνειας | 124 | 141 | 155 | 150 | 155 | 150 |
| Υετός | 651 | 589 | 653 | 647 | 682 | 660 |
| Υγρασία/Ορατότητα | 92 | 84 | 92 | 104 | 123 | 119 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 744 | 743 | 720 | 740 | 718 | 744 |
| Tmin | 740 | 742 | 719 | 738 | 719 | 743 |
| Διάρκεια Ηλιοφάνειας | 155 | 155 | 150 | 155 | 150 | 155 |
| Υετός | 684 | 684 | 662 | 679 | 660 | 682 |
| Υγρασία/Ορατότητα | 122 | 122 | 118 | 118 | 118 | 124 |
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. |
