Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 79 | 76 | 82 | 83 | 85 | 96 |
| Tmin | 86 | 79 | 88 | 87 | 85 | 96 |
| Διάρκεια Ηλιοφάνειας | 93 | 141 | 186 | 180 | 155 | 180 |
| Υετός | 103 | 94 | 97 | 98 | 97 | 112 |
| Υγρασία/Ορατότητα | 81 | 76 | 86 | 83 | 86 | 95 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 109 | 113 | 110 | 111 | 109 | 108 |
| Tmin | 116 | 118 | 116 | 117 | 107 | 113 |
| Διάρκεια Ηλιοφάνειας | 124 | 217 | 120 | 217 | 120 | 62 |
| Υετός | 129 | 132 | 124 | 125 | 134 | 131 |
| Υγρασία/Ορατότητα | 114 | 114 | 111 | 109 | 111 | 113 |
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. |
