Table 1 Coordinates of six representative stations in Brazil used for TEC and Digisonde data
Station | Instrument/technique | Latitude | Longitude | Dip lat |
|---|---|---|---|---|
SALU (Sao Luis) | GPS/GNSS VTEC SPECTRAL analysis | 2.6°S | 44.2°W | 8.7°S |
FOR (Fortaleza) | GPS/GNSS receiver | 3.8°S | 38.4°W | 13.1°S |
GVAL (Governador Valadares | GPS/GNSS receiver | 18.5°S | 41.4°W | 31.8°S |
UBAT (Ubatuba) | GPS/GNSS receiver | 23.5°S | 45.4°W | 34.9°S |
CP Cachoeira Paulista (CP) | Digisonde DPS4 | 23.4°S | 45.0°W | 32.7°S |
SMAR (Santa Maria) | GPS/GNSS receiver | 29.2°S | 53.2°W | 35.9°S |