Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 641 | 574 | 647 | 678 | 687 | 629 |
| Tmin | 615 | 555 | 614 | 654 | 659 | 614 |
| Διάρκεια Ηλιοφάνειας | 242 | 175 | 193 | 291 | 223 | 189 |
| Υετός | 124 | 114 | 124 | 153 | 153 | 139 |
| Υγρασία/Ορατότητα | 68 | 41 | 49 | 114 | 116 | 105 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 666 | 672 | 643 | 659 | 635 | 638 |
| Tmin | 644 | 647 | 620 | 636 | 620 | 636 |
| Διάρκεια Ηλιοφάνειας | 295 | 303 | 287 | 293 | 250 | 287 |
| Υετός | 156 | 153 | 146 | 147 | 146 | 130 |
| Υγρασία/Ορατότητα | 116 | 113 | 106 | 109 | 96 | 73 |
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. |
