Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 740 | 667 | 742 | 718 | 741 | 719 |
| Tmin | 743 | 668 | 741 | 715 | 740 | 718 |
| Διάρκεια Ηλιοφάνειας | 185 | 162 | 180 | 163 | 170 | 170 |
| Υετός | 372 | 340 | 372 | 367 | 376 | 360 |
| Υγρασία/Ορατότητα | 183 | 164 | 182 | 176 | 183 | 177 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 742 | 739 | 747 | 765 | 742 | 770 |
| Tmin | 743 | 740 | 742 | 766 | 744 | 772 |
| Διάρκεια Ηλιοφάνειας | 170 | 164 | 183 | 188 | 199 | 208 |
| Υετός | 374 | 378 | 392 | 403 | 394 | 403 |
| Υγρασία/Ορατότητα | 183 | 182 | 204 | 207 | 204 | 212 |
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. |
