Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 132 | 106 | 106 | 111 | 111 | 97 |
| Tmin | 135 | 120 | 112 | 102 | 109 | 107 |
| Διάρκεια Ηλιοφάνειας | 93 | 113 | 124 | 120 | 124 | 120 |
| Υετός | 151 | 137 | 156 | 148 | 150 | 150 |
| Υγρασία/Ορατότητα | 141 | 126 | 140 | 131 | 138 | 136 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 108 | 110 | 113 | 109 | 113 | 114 |
| Tmin | 110 | 110 | 109 | 106 | 111 | 113 |
| Διάρκεια Ηλιοφάνειας | 124 | 124 | 120 | 124 | 120 | 0 |
| Υετός | 151 | 187 | 177 | 165 | 147 | 156 |
| Υγρασία/Ορατότητα | 142 | 160 | 163 | 154 | 137 | 148 |
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. |
