Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 121 | 106 | 119 | 126 | 122 | 116 |
| Tmin | 121 | 108 | 119 | 131 | 122 | 119 |
| Διάρκεια Ηλιοφάνειας | 31 | 28 | 62 | 60 | 62 | 60 |
| Υετός | 132 | 118 | 130 | 145 | 161 | 154 |
| Υγρασία/Ορατότητα | 120 | 109 | 119 | 136 | 152 | 146 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 119 | 94 | 86 | 80 | 56 | 60 |
| Tmin | 123 | 95 | 88 | 84 | 60 | 61 |
| Διάρκεια Ηλιοφάνειας | 62 | 62 | 60 | 62 | 60 | 62 |
| Υετός | 157 | 159 | 152 | 161 | 152 | 161 |
| Υγρασία/Ορατότητα | 150 | 147 | 146 | 144 | 145 | 149 |
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. |
