Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 571 | 499 | 520 | 532 | 547 | 546 |
| Tmin | 580 | 503 | 525 | 528 | 552 | 552 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 155 | 143 | 161 | 157 | 156 | 151 |
| Υγρασία/Ορατότητα | 147 | 133 | 142 | 137 | 141 | 137 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 552 | 572 | 558 | 599 | 575 | 607 |
| Tmin | 568 | 578 | 563 | 605 | 581 | 615 |
| Διάρκεια Ηλιοφάνειας | 0 | 0 | 0 | 0 | 0 | 0 |
| Υετός | 159 | 159 | 154 | 185 | 182 | 193 |
| Υγρασία/Ορατότητα | 138 | 139 | 133 | 169 | 175 | 180 |
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. |
