Improved characterization and modeling of equatorial plasma depletions | Journal of Space Weather and Space Climate

Space weather effects on GNSS and their mitigation

Open Access

Fig. 5.

The left plot shows the cumulative number of the SIGMA(2DTEC) with the change in the trend at value SIGMA(2DTEC) = 0.714 TECU. This value indicates the threshold value for the SIGMA(2DTEC) to determine the starting and ending time of the perturbation (right plot).

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