Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 142 | 121 | 145 | 143 | 151 | 136 |
| Tmin | 150 | 138 | 148 | 146 | 153 | 141 |
| Διάρκεια Ηλιοφάνειας | 100 | 91 | 97 | 103 | 106 | 95 |
| Υετός | 157 | 142 | 157 | 153 | 157 | 152 |
| Υγρασία/Ορατότητα | 149 | 137 | 153 | 148 | 153 | 148 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 144 | 174 | 168 | 168 | 168 | 145 |
| Tmin | 143 | 168 | 171 | 168 | 172 | 147 |
| Διάρκεια Ηλιοφάνειας | 95 | 97 | 105 | 93 | 79 | 106 |
| Υετός | 160 | 186 | 181 | 186 | 181 | 162 |
| Υγρασία/Ορατότητα | 152 | 169 | 173 | 172 | 167 | 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. |
