Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 68 | 38 | 49 | 54 | 55 | 42 |
| Tmin | 73 | 47 | 53 | 56 | 61 | 55 |
| Διάρκεια Ηλιοφάνειας | 73 | 42 | 46 | 60 | 55 | 55 |
| Υετός | 123 | 112 | 126 | 121 | 124 | 124 |
| Υγρασία/Ορατότητα | 109 | 98 | 110 | 103 | 110 | 107 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 57 | 77 | 61 | 55 | 59 | 58 |
| Tmin | 57 | 69 | 60 | 55 | 58 | 62 |
| Διάρκεια Ηλιοφάνειας | 52 | 70 | 63 | 56 | 57 | 62 |
| Υετός | 124 | 161 | 159 | 147 | 127 | 130 |
| Υγρασία/Ορατότητα | 112 | 128 | 133 | 126 | 104 | 114 |
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. |
