Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 121 | 110 | 121 | 146 | 145 | 142 |
| Tmin | 80 | 79 | 95 | 112 | 108 | 114 |
| Διάρκεια Ηλιοφάνειας | 143 | 142 | 113 | 51 | 80 | 146 |
| Υετός | 124 | 113 | 135 | 150 | 157 | 149 |
| Υγρασία/Ορατότητα | 101 | 94 | 107 | 117 | 118 | 122 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 145 | 148 | 148 | 151 | 149 | 118 |
| Tmin | 110 | 113 | 109 | 117 | 118 | 116 |
| Διάρκεια Ηλιοφάνειας | 88 | 119 | 121 | 109 | 100 | 134 |
| Υετός | 156 | 156 | 150 | 153 | 150 | 131 |
| Υγρασία/Ορατότητα | 124 | 121 | 122 | 117 | 122 | 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. |
