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Table 1
The coordinates of Digisondes and GNSS stations used for this analysis.
| Ionospheric station | Geographic longitude (°E) | Geographic latitude (°N) | GNSS station | Geographic longitude (°E) | Geographic latitude (°N) |
|---|---|---|---|---|---|
| Chilton | 359.4 | 51.5 | HERT | 0.334 | 50.867 |
| Dourbes | 4.6 | 50.1 | DOUR | 4.595 | 50.095 |
| Juliusruh | 13.4 | 54.6 | SASS | 13.643 | 54.514 |
| Pruhonice | 14.6 | 50.0 | GOPE | 14.786 | 49.914 |
| Ebre | 0.5 | 40.8 | EBRE | 0.492 | 40.821 |
| Rome | 12.5 | 41.9 | M0SE | 12.493 | 41.893 |
| San Vito | 17.8 | 40.6 | USAL | 18.110 | 40.330 |
| Athens | 23.5 | 38.0 | NOA1 | 23.864 | 38.047 |
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