Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 529 | 490 | 555 | 556 | 569 | 549 |
| Tmin | 531 | 483 | 551 | 557 | 567 | 547 |
| Διάρκεια Ηλιοφάνειας | 279 | 198 | 279 | 240 | 248 | 210 |
| Υετός | 124 | 122 | 130 | 164 | 167 | 152 |
| Υγρασία/Ορατότητα | 120 | 108 | 121 | 141 | 148 | 133 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 580 | 555 | 519 | 545 | 501 | 504 |
| Tmin | 579 | 554 | 519 | 540 | 500 | 504 |
| Διάρκεια Ηλιοφάνειας | 279 | 217 | 240 | 279 | 270 | 248 |
| Υετός | 161 | 161 | 152 | 161 | 154 | 163 |
| Υγρασία/Ορατότητα | 148 | 149 | 145 | 143 | 141 | 146 |
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. |
