Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 1020 | 967 | 1065 | 1048 | 1045 | 1034 |
| Tmin | 1040 | 975 | 1063 | 1052 | 1063 | 1046 |
| Διάρκεια Ηλιοφάνειας | 147 | 125 | 128 | 128 | 126 | 123 |
| Υετός | 196 | 190 | 218 | 193 | 211 | 199 |
| Υγρασία/Ορατότητα | 145 | 130 | 145 | 137 | 128 | 129 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 1099 | 1086 | 1086 | 1096 | 1049 | 1083 |
| Tmin | 1099 | 1090 | 1107 | 1110 | 1062 | 1086 |
| Διάρκεια Ηλιοφάνειας | 139 | 137 | 172 | 150 | 147 | 164 |
| Υετός | 212 | 208 | 240 | 232 | 234 | 249 |
| Υγρασία/Ορατότητα | 150 | 148 | 171 | 159 | 149 | 175 |
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. |
