Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 1635 | 1475 | 1638 | 1586 | 1634 | 1583 |
| Tmin | 1638 | 1480 | 1640 | 1585 | 1638 | 1586 |
| Διάρκεια Ηλιοφάνειας | 62 | 57 | 62 | 60 | 124 | 150 |
| Υετός | 155 | 141 | 155 | 151 | 155 | 150 |
| Υγρασία/Ορατότητα | 153 | 138 | 153 | 147 | 149 | 148 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 1634 | 1631 | 1583 | 1633 | 1585 | 1638 |
| Tmin | 1639 | 1633 | 1585 | 1633 | 1588 | 1642 |
| Διάρκεια Ηλιοφάνειας | 155 | 124 | 120 | 124 | 90 | 93 |
| Υετός | 157 | 157 | 150 | 153 | 150 | 155 |
| Υγρασία/Ορατότητα | 151 | 150 | 147 | 148 | 147 | 154 |
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. |
