Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 116 | 97 | 118 | 136 | 136 | 129 |
| Tmin | 106 | 90 | 106 | 128 | 126 | 115 |
| Διάρκεια Ηλιοφάνειας | 248 | 198 | 248 | 210 | 186 | 150 |
| Υετός | 142 | 140 | 152 | 162 | 185 | 182 |
| Υγρασία/Ορατότητα | 113 | 98 | 113 | 137 | 133 | 126 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 142 | 141 | 128 | 134 | 131 | 131 |
| Tmin | 132 | 122 | 118 | 118 | 119 | 127 |
| Διάρκεια Ηλιοφάνειας | 217 | 186 | 240 | 279 | 240 | 217 |
| Υετός | 175 | 195 | 191 | 187 | 170 | 193 |
| Υγρασία/Ορατότητα | 142 | 131 | 129 | 133 | 127 | 131 |
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. |
