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Earth, Planets and Space
Fig. 8 | Earth, Planets and Space

Fig. 8

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

Fig. 8

The piecewise fitting curves derived from Fig. 7 are shown. The left, middle, and right panels show the results for the summer, equinox, and winter seasons, respectively. The red lines denote the variation in the trough depth with respect to F107. The black lines denote the variation in the background TEC. The blue lines denote the variation in the TEC value of the trough minimum

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