Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 376 | 348 | 389 | 380 | 381 | 371 |
| Tmin | 382 | 355 | 387 | 384 | 389 | 379 |
| Διάρκεια Ηλιοφάνειας | 100 | 101 | 104 | 111 | 106 | 108 |
| Υετός | 347 | 311 | 343 | 332 | 348 | 334 |
| Υγρασία/Ορατότητα | 91 | 87 | 96 | 97 | 90 | 94 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 392 | 393 | 369 | 377 | 369 | 386 |
| Tmin | 386 | 396 | 371 | 377 | 364 | 385 |
| Διάρκεια Ηλιοφάνειας | 106 | 118 | 100 | 95 | 93 | 102 |
| Υετός | 342 | 344 | 334 | 332 | 330 | 350 |
| Υγρασία/Ορατότητα | 97 | 99 | 91 | 83 | 83 | 89 |
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. |
