Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 171 | 156 | 181 | 154 | 160 | 151 |
| Tmin | 137 | 130 | 150 | 131 | 147 | 140 |
| Διάρκεια Ηλιοφάνειας | 124 | 130 | 210 | 216 | 256 | 202 |
| Υετός | 242 | 206 | 220 | 212 | 214 | 229 |
| Υγρασία/Ορατότητα | 152 | 148 | 163 | 146 | 149 | 137 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 151 | 161 | 181 | 163 | 190 | 187 |
| Tmin | 137 | 143 | 162 | 162 | 159 | 152 |
| Διάρκεια Ηλιοφάνειας | 183 | 220 | 262 | 253 | 214 | 177 |
| Υετός | 229 | 228 | 250 | 247 | 256 | 269 |
| Υγρασία/Ορατότητα | 142 | 145 | 172 | 163 | 169 | 169 |
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. |
