Number of days available for climatic review
| Παράμετρος | Ιαν | Φεβ | Μαρ | Απρ | Ιουν | Ιουλ |
| Tmax | 0 | 1024 | 1048576 | 1048576 | 1074791425 | 1074791425 |
| Tmin | 1229407570 | 809324111 | 641019952 | 1028607319 | 842217592 | 1163001905 |
| Διάρκεια Ηλιοφάνειας | 1 | 0 | -2131727808 | 0 | 5588205 | 0 |
| Υετός | 0 | 0 | 0 | 0 | 0 | 0 |
| Υγρασία/Ορατότητα | -794780528 | -427157787 | -1981131776 | 0 | 0 | 0 |
| Παράμετρος | Αυγ | Σεπ | Οκτ | Νοε | Δεκ | (null) |
| Tmax | 1074791425 | 1074791425 | 0 | 269485056 | 0 | 269485056 |
| Tmin | 1397052753 | 1381326676 | 0 | 0 | 0 | 0 |
| Διάρκεια Ηλιοφάνειας | 255 | 0 | 15728640 | 0 | 0 | 0 |
| Υετός | 0 | 0 | 0 | 0 | 0 | 0 |
| Υγρασία/Ορατότητα | 0 | 0 | -2131729008 | 0 | -1981359844 | 0 |
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. |
