Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 58 | 47 | 74 | 101 | 105 | 107 |
| Tmin | 62 | 47 | 82 | 111 | 117 | 111 |
| Διάρκεια Ηλιοφάνειας | 58 | 45 | 77 | 73 | 78 | 78 |
| Υετός | 108 | 97 | 102 | 138 | 130 | 131 |
| Υγρασία/Ορατότητα | 45 | 34 | 60 | 77 | 82 | 81 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 95 | 111 | 107 | 101 | 94 | 103 |
| Tmin | 106 | 120 | 113 | 112 | 102 | 111 |
| Διάρκεια Ηλιοφάνειας | 86 | 111 | 108 | 102 | 93 | 102 |
| Υετός | 138 | 129 | 127 | 130 | 130 | 142 |
| Υγρασία/Ορατότητα | 76 | 86 | 83 | 78 | 75 | 81 |
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. |
