Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 788 | 709 | 794 | 791 | 816 | 791 |
| Tmin | 795 | 706 | 790 | 790 | 811 | 783 |
| Διάρκεια Ηλιοφάνειας | 248 | 169 | 217 | 210 | 217 | 240 |
| Υετός | 636 | 568 | 626 | 629 | 665 | 640 |
| Υγρασία/Ορατότητα | 113 | 94 | 112 | 132 | 137 | 129 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 817 | 806 | 786 | 808 | 785 | 809 |
| Tmin | 812 | 807 | 786 | 802 | 776 | 798 |
| Διάρκεια Ηλιοφάνειας | 186 | 186 | 270 | 248 | 150 | 217 |
| Υετός | 664 | 657 | 658 | 681 | 648 | 179 |
| Υγρασία/Ορατότητα | 134 | 123 | 127 | 127 | 117 | 122 |
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. |
