Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 847 | 746 | 831 | 811 | 820 | 795 |
| Tmin | 851 | 760 | 841 | 824 | 848 | 820 |
| Διάρκεια Ηλιοφάνειας | 31 | 28 | 31 | 30 | 31 | 30 |
| Υετός | 738 | 663 | 733 | 712 | 748 | 721 |
| Υγρασία/Ορατότητα | 171 | 140 | 161 | 164 | 161 | 159 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 819 | 841 | 830 | 867 | 819 | 854 |
| Tmin | 839 | 853 | 856 | 875 | 839 | 882 |
| Διάρκεια Ηλιοφάνειας | 62 | 62 | 60 | 62 | 60 | 62 |
| Υετός | 744 | 740 | 748 | 767 | 747 | 766 |
| Υγρασία/Ορατότητα | 164 | 169 | 191 | 197 | 176 | 195 |
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. |
