Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 717 | 647 | 720 | 694 | 717 | 702 |
| Tmin | 699 | 652 | 699 | 672 | 699 | 673 |
| Διάρκεια Ηλιοφάνειας | 62 | 56 | 0 | 30 | 31 | 60 |
| Υετός | 177 | 169 | 185 | 176 | 186 | 183 |
| Υγρασία/Ορατότητα | 135 | 132 | 137 | 137 | 139 | 139 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 723 | 725 | 724 | 747 | 741 | 721 |
| Tmin | 697 | 697 | 707 | 722 | 712 | 727 |
| Διάρκεια Ηλιοφάνειας | 62 | 62 | 60 | 62 | 120 | 93 |
| Υετός | 187 | 192 | 211 | 215 | 210 | 193 |
| Υγρασία/Ορατότητα | 147 | 148 | 169 | 165 | 164 | 151 |
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. |
