Fig. 12From: Double-thin-shell approach to deriving total electron content from GNSS signals and implications for ionospheric dynamics near the magnetic equatorLocal time variation of ls-TEC, hs-TEC, and two-shell TEC a at 12\(^\circ \)N magnetic latitude away from equator and b at magnetic equator for shell height combination of 300 and 600 km. The two latitudes are shown by the red dashed line (12\(^\circ \)N magnetic latitude) and the dash-dotted line (magnetic equator) in Fig. 9a–cBack to article page