Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 136 | 125 | 150 | 143 | 151 | 145 |
| Tmin | 143 | 132 | 150 | 147 | 153 | 146 |
| Διάρκεια Ηλιοφάνειας | 75 | 83 | 87 | 92 | 103 | 107 |
| Υετός | 153 | 140 | 154 | 151 | 155 | 150 |
| Υγρασία/Ορατότητα | 105 | 99 | 111 | 110 | 114 | 111 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 146 | 166 | 167 | 171 | 167 | 143 |
| Tmin | 151 | 164 | 170 | 167 | 159 | 142 |
| Διάρκεια Ηλιοφάνειας | 103 | 112 | 91 | 76 | 64 | 86 |
| Υετός | 160 | 188 | 182 | 182 | 178 | 163 |
| Υγρασία/Ορατότητα | 115 | 124 | 128 | 129 | 125 | 111 |
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. |
