Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 740 | 640 | 707 | 687 | 709 | 686 |
| Tmin | 737 | 637 | 705 | 683 | 711 | 682 |
| Διάρκεια Ηλιοφάνειας | 108 | 76 | 81 | 83 | 91 | 82 |
| Υετός | 692 | 630 | 686 | 671 | 684 | 668 |
| Υγρασία/Ορατότητα | 137 | 126 | 134 | 125 | 134 | 131 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 716 | 712 | 696 | 696 | 686 | 711 |
| Tmin | 716 | 718 | 697 | 695 | 686 | 713 |
| Διάρκεια Ηλιοφάνειας | 96 | 97 | 97 | 75 | 82 | 83 |
| Υετός | 686 | 722 | 727 | 746 | 689 | 694 |
| Υγρασία/Ορατότητα | 143 | 161 | 176 | 162 | 149 | 144 |
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. |
