Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 742 | 669 | 741 | 734 | 774 | 749 |
| Tmin | 737 | 671 | 738 | 735 | 770 | 747 |
| Διάρκεια Ηλιοφάνειας | 304 | 281 | 251 | 310 | 370 | 358 |
| Υετός | 95 | 87 | 94 | 107 | 124 | 120 |
| Υγρασία/Ορατότητα | 92 | 84 | 92 | 104 | 123 | 119 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 775 | 771 | 749 | 768 | 747 | 772 |
| Tmin | 767 | 770 | 747 | 762 | 744 | 771 |
| Διάρκεια Ηλιοφάνειας | 391 | 372 | 330 | 355 | 324 | 317 |
| Υετός | 127 | 127 | 120 | 121 | 120 | 124 |
| Υγρασία/Ορατότητα | 123 | 122 | 118 | 118 | 119 | 123 |
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. |
