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Figure 14


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Time series of median of the TEC N-S gradient at 100 km and of the corresponding Ne gradient medians from mid-latitude model in the geographical sector (13°E, 35–46°N). Shaded areas indicate the ±1 sigma spread around the median. Periods refer to 17–20 March 2015 (a) and 7–10 March 2012 (b).

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