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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Statistical analysis of ionospheric mid-latitude trough over the Northern Hemisphere derived from GPS total electron content data

Fig. 5

The geomagnetic activity variations in the trough equatorward half-width (upper panel (a)), trough poleward half-width ((middle panel (b)), and trough width (lower panel (c)) during equinox. The data correspond to the near-midnight region (2300–0100 MLT) and median solar activity (100 ≤ F107 ≤ 115). The red solid lines show the linear fit of the data. The correlation coefficients (c.c.) and the linear regression equations are also shown in the figure

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