Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 116 | 110 | 120 | 132 | 150 | 144 |
| Tmin | 118 | 106 | 119 | 129 | 151 | 138 |
| Διάρκεια Ηλιοφάνειας | 217 | 198 | 279 | 210 | 248 | 210 |
| Υετός | 132 | 124 | 130 | 147 | 165 | 172 |
| Υγρασία/Ορατότητα | 89 | 81 | 91 | 100 | 112 | 107 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 145 | 138 | 138 | 139 | 136 | 139 |
| Tmin | 144 | 143 | 137 | 141 | 135 | 138 |
| Διάρκεια Ηλιοφάνειας | 279 | 217 | 240 | 248 | 270 | 217 |
| Υετός | 169 | 165 | 162 | 161 | 156 | 177 |
| Υγρασία/Ορατότητα | 111 | 108 | 108 | 107 | 104 | 107 |
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. |
