Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 1247 | 1146 | 1263 | 1225 | 1259 | 1226 |
| Tmin | 1252 | 1147 | 1263 | 1227 | 1262 | 1227 |
| Διάρκεια Ηλιοφάνειας | 178 | 153 | 176 | 168 | 175 | 168 |
| Υετός | 186 | 169 | 186 | 181 | 186 | 180 |
| Υγρασία/Ορατότητα | 183 | 165 | 183 | 177 | 183 | 177 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 1267 | 1264 | 1253 | 1294 | 1254 | 1298 |
| Tmin | 1267 | 1272 | 1254 | 1294 | 1257 | 1297 |
| Διάρκεια Ηλιοφάνειας | 177 | 179 | 190 | 195 | 205 | 207 |
| Υετός | 186 | 190 | 212 | 215 | 210 | 217 |
| Υγρασία/Ορατότητα | 183 | 184 | 205 | 206 | 204 | 213 |
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. |
