Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 636 | 566 | 625 | 609 | 626 | 612 |
| Tmin | 631 | 575 | 628 | 608 | 625 | 612 |
| Διάρκεια Ηλιοφάνειας | 117 | 115 | 125 | 123 | 127 | 132 |
| Υετός | 165 | 154 | 175 | 162 | 163 | 172 |
| Υγρασία/Ορατότητα | 134 | 122 | 127 | 124 | 125 | 123 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 631 | 662 | 623 | 636 | 613 | 629 |
| Tmin | 641 | 659 | 635 | 648 | 612 | 631 |
| Διάρκεια Ηλιοφάνειας | 142 | 161 | 155 | 148 | 129 | 117 |
| Υετός | 160 | 196 | 194 | 196 | 167 | 180 |
| Υγρασία/Ορατότητα | 138 | 158 | 149 | 141 | 128 | 133 |
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. |
