Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 91 | 77 | 107 | 110 | 123 | 112 |
| Tmin | 89 | 75 | 92 | 102 | 121 | 117 |
| Διάρκεια Ηλιοφάνειας | 64 | 52 | 79 | 79 | 92 | 92 |
| Υετός | 141 | 134 | 150 | 174 | 175 | 176 |
| Υγρασία/Ορατότητα | 94 | 86 | 100 | 105 | 123 | 117 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 104 | 108 | 103 | 113 | 95 | 118 |
| Tmin | 115 | 107 | 109 | 111 | 83 | 100 |
| Διάρκεια Ηλιοφάνειας | 88 | 79 | 77 | 99 | 71 | 91 |
| Υετός | 174 | 184 | 189 | 170 | 159 | 193 |
| Υγρασία/Ορατότητα | 113 | 110 | 111 | 115 | 90 | 113 |
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. |
