Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 177 | 162 | 169 | 165 | 161 | 168 |
| Tmin | 166 | 157 | 169 | 155 | 146 | 153 |
| Διάρκεια Ηλιοφάνειας | 213 | 187 | 282 | 231 | 184 | 147 |
| Υετός | 188 | 168 | 183 | 179 | 183 | 177 |
| Υγρασία/Ορατότητα | 138 | 118 | 131 | 120 | 127 | 132 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 157 | 162 | 191 | 191 | 197 | 196 |
| Tmin | 129 | 142 | 183 | 174 | 168 | 172 |
| Διάρκεια Ηλιοφάνειας | 252 | 163 | 222 | 248 | 239 | 192 |
| Υετός | 186 | 179 | 208 | 210 | 208 | 217 |
| Υγρασία/Ορατότητα | 128 | 123 | 144 | 147 | 149 | 149 |
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. |
