Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 183 | 167 | 184 | 180 | 183 | 180 |
| Tmin | 184 | 167 | 186 | 180 | 186 | 180 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 186 | 168 | 187 | 181 | 186 | 180 |
| Υγρασία/Ορατότητα | 180 | 167 | 184 | 178 | 184 | 179 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 181 | 186 | 208 | 214 | 207 | 214 |
| Tmin | 184 | 182 | 208 | 213 | 209 | 214 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 186 | 190 | 210 | 215 | 210 | 218 |
| Υγρασία/Ορατότητα | 183 | 183 | 207 | 208 | 205 | 214 |
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. |
