Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 154 | 137 | 155 | 149 | 152 | 150 |
| Tmin | 155 | 139 | 154 | 148 | 155 | 149 |
| Διάρκεια Ηλιοφάνειας | 248 | 222 | 278 | 268 | 279 | 269 |
| Υετός | 155 | 140 | 155 | 151 | 155 | 150 |
| Υγρασία/Ορατότητα | 154 | 139 | 154 | 149 | 153 | 149 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 152 | 151 | 150 | 148 | 148 | 157 |
| Tmin | 155 | 154 | 149 | 147 | 146 | 155 |
| Διάρκεια Ηλιοφάνειας | 310 | 278 | 269 | 270 | 266 | 280 |
| Υετός | 155 | 157 | 152 | 155 | 150 | 157 |
| Υγρασία/Ορατότητα | 153 | 152 | 148 | 148 | 148 | 153 |
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. |
