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Fig. 3 | Earth, Planets and Space

Fig. 3

From: Medium-scale traveling ionospheric disturbances by three-dimensional ionospheric GPS tomography

Fig. 3

Two-dimensional structure of electron density on altitude–latitude and latitude–longitude planes. a, b NeQuick electron density and the reconstructed density by tomography at 136°E longitude plane, respectively. The associated error distribution between tomography and model is shown in (c). df Same as (ac) but at 300 km altitude plane. The three red points in (f) indicate the locations of electron density profiles in Figs. 4b–d. The unit of electron density is el/m3

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