Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 1141 | 1035 | 1139 | 1105 | 1134 | 1090 |
| Tmin | 1142 | 1034 | 1140 | 1101 | 1135 | 1094 |
| Διάρκεια Ηλιοφάνειας | 188 | 230 | 253 | 254 | 247 | 259 |
| Υετός | 157 | 148 | 164 | 166 | 161 | 159 |
| Υγρασία/Ορατότητα | 143 | 131 | 152 | 145 | 149 | 142 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 1134 | 1142 | 1113 | 1135 | 1106 | 1140 |
| Tmin | 1137 | 1136 | 1121 | 1139 | 1105 | 1142 |
| Διάρκεια Ηλιοφάνειας | 266 | 297 | 323 | 319 | 264 | 238 |
| Υετός | 159 | 170 | 180 | 189 | 183 | 192 |
| Υγρασία/Ορατότητα | 151 | 149 | 173 | 176 | 173 | 180 |
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. |
