Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 274 | 250 | 278 | 269 | 277 | 270 |
| Tmin | 278 | 251 | 278 | 270 | 278 | 267 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 155 | 141 | 157 | 153 | 157 | 150 |
| Υγρασία/Ορατότητα | 153 | 139 | 153 | 148 | 153 | 149 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 275 | 277 | 298 | 301 | 295 | 303 |
| Tmin | 279 | 279 | 300 | 303 | 298 | 310 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 157 | 164 | 180 | 186 | 182 | 186 |
| Υγρασία/Ορατότητα | 153 | 154 | 176 | 178 | 177 | 185 |
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. |
