Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 42 | 35 | 64 | 71 | 77 | 72 |
| Tmin | 49 | 38 | 61 | 76 | 82 | 78 |
| Διάρκεια Ηλιοφάνειας | 93 | 56 | 124 | 150 | 124 | 120 |
| Υετός | 129 | 109 | 141 | 175 | 188 | 182 |
| Υγρασία/Ορατότητα | 77 | 73 | 89 | 109 | 116 | 116 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 83 | 66 | 82 | 66 | 43 | 35 |
| Tmin | 70 | 59 | 70 | 61 | 47 | 43 |
| Διάρκεια Ηλιοφάνειας | 93 | 93 | 150 | 155 | 30 | 93 |
| Υετός | 173 | 174 | 189 | 175 | 152 | 153 |
| Υγρασία/Ορατότητα | 119 | 113 | 120 | 99 | 81 | 93 |
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. |
