Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 1071 | 978 | 1078 | 1060 | 1056 | 1016 |
| Tmin | 1072 | 979 | 1081 | 1063 | 1058 | 1017 |
| Διάρκεια Ηλιοφάνειας | 218 | 225 | 186 | 270 | 248 | 210 |
| Υετός | 99 | 87 | 97 | 123 | 129 | 123 |
| Υγρασία/Ορατότητα | 89 | 82 | 90 | 114 | 120 | 116 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 1047 | 1025 | 987 | 1022 | 989 | 1021 |
| Tmin | 1051 | 1026 | 989 | 1020 | 988 | 1023 |
| Διάρκεια Ηλιοφάνειας | 186 | 248 | 270 | 248 | 210 | 217 |
| Υετός | 128 | 126 | 122 | 126 | 123 | 133 |
| Υγρασία/Ορατότητα | 121 | 120 | 115 | 114 | 115 | 120 |
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. |
