Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 128 | 122 | 142 | 137 | 142 | 139 |
| Tmin | 122 | 121 | 134 | 133 | 153 | 132 |
| Διάρκεια Ηλιοφάνειας | 186 | 226 | 217 | 210 | 248 | 300 |
| Υετός | 166 | 154 | 176 | 177 | 179 | 167 |
| Υγρασία/Ορατότητα | 96 | 92 | 106 | 104 | 112 | 104 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 136 | 140 | 163 | 158 | 152 | 147 |
| Tmin | 133 | 131 | 154 | 163 | 150 | 145 |
| Διάρκεια Ηλιοφάνειας | 217 | 217 | 270 | 310 | 180 | 186 |
| Υετός | 175 | 178 | 203 | 191 | 194 | 199 |
| Υγρασία/Ορατότητα | 101 | 100 | 124 | 125 | 120 | 117 |
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. |
