Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 92 | 82 | 104 | 108 | 127 | 113 |
| Tmin | 90 | 69 | 98 | 103 | 121 | 112 |
| Διάρκεια Ηλιοφάνειας | 99 | 82 | 109 | 84 | 187 | 127 |
| Υετός | 142 | 132 | 146 | 169 | 177 | 173 |
| Υγρασία/Ορατότητα | 96 | 86 | 98 | 107 | 126 | 119 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 106 | 107 | 103 | 110 | 94 | 116 |
| Tmin | 109 | 114 | 109 | 115 | 78 | 99 |
| Διάρκεια Ηλιοφάνειας | 184 | 86 | 94 | 130 | 149 | 149 |
| Υετός | 170 | 185 | 189 | 167 | 162 | 205 |
| Υγρασία/Ορατότητα | 115 | 113 | 111 | 118 | 91 | 115 |
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. |
