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Table 1 Coordinates of six representative stations in Brazil used for TEC and Digisonde data

From: Response of the total electron content at Brazilian low latitudes to corotating interaction region and high-speed streams during solar minimum 2008

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