Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 765 | 700 | 775 | 765 | 804 | 780 |
| Tmin | 766 | 701 | 774 | 763 | 804 | 779 |
| Διάρκεια Ηλιοφάνειας | 248 | 226 | 279 | 270 | 310 | 300 |
| Υετός | 93 | 89 | 95 | 111 | 124 | 120 |
| Υγρασία/Ορατότητα | 92 | 83 | 92 | 104 | 123 | 119 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 802 | 804 | 766 | 793 | 777 | 802 |
| Tmin | 805 | 806 | 767 | 799 | 777 | 806 |
| Διάρκεια Ηλιοφάνειας | 310 | 248 | 270 | 310 | 240 | 279 |
| Υετός | 126 | 127 | 120 | 124 | 120 | 124 |
| Υγρασία/Ορατότητα | 122 | 122 | 118 | 116 | 118 | 124 |
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. |
