Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 102 | 90 | 121 | 120 | 123 | 126 |
| Tmin | 87 | 91 | 117 | 131 | 128 | 125 |
| Διάρκεια Ηλιοφάνειας | 88 | 76 | 109 | 103 | 106 | 112 |
| Υετός | 127 | 112 | 154 | 165 | 158 | 152 |
| Υγρασία/Ορατότητα | 93 | 85 | 105 | 113 | 115 | 116 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 133 | 125 | 130 | 134 | 138 | 139 |
| Tmin | 116 | 107 | 102 | 117 | 123 | 137 |
| Διάρκεια Ηλιοφάνειας | 97 | 100 | 94 | 103 | 99 | 128 |
| Υετός | 162 | 177 | 173 | 158 | 159 | 177 |
| Υγρασία/Ορατότητα | 112 | 107 | 106 | 107 | 113 | 129 |
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. |
