Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 276 | 248 | 276 | 281 | 305 | 296 |
| Tmin | 271 | 249 | 278 | 283 | 305 | 295 |
| Διάρκεια Ηλιοφάνειας | 239 | 219 | 275 | 277 | 237 | 294 |
| Υετός | 64 | 62 | 64 | 77 | 96 | 91 |
| Υγρασία/Ορατότητα | 58 | 54 | 60 | 74 | 88 | 87 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 301 | 305 | 296 | 298 | 284 | 305 |
| Tmin | 300 | 298 | 294 | 299 | 289 | 297 |
| Διάρκεια Ηλιοφάνειας | 236 | 298 | 288 | 233 | 217 | 207 |
| Υετός | 101 | 95 | 91 | 93 | 96 | 97 |
| Υγρασία/Ορατότητα | 89 | 89 | 86 | 82 | 81 | 90 |
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. |
