Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 646 | 592 | 645 | 634 | 649 | 624 |
| Tmin | 650 | 603 | 648 | 642 | 654 | 629 |
| Διάρκεια Ηλιοφάνειας | 122 | 124 | 117 | 128 | 113 | 114 |
| Υετός | 182 | 154 | 180 | 173 | 180 | 184 |
| Υγρασία/Ορατότητα | 103 | 106 | 108 | 108 | 105 | 98 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 639 | 652 | 642 | 660 | 649 | 693 |
| Tmin | 643 | 661 | 655 | 677 | 646 | 688 |
| Διάρκεια Ηλιοφάνειας | 112 | 131 | 136 | 145 | 140 | 158 |
| Υετός | 170 | 184 | 201 | 213 | 223 | 203 |
| Υγρασία/Ορατότητα | 101 | 114 | 119 | 117 | 120 | 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. |
