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Fig. 7.
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Errors in GPS positioning during the magnetic storms of 29–31 October 2003 (d, e); variations of geomagnetic parameters (a); root-mean-square deviations of TEC in the range of periods of 20–60 and 1–10 min. (b, c) (figure taken from Afraimovich & Perevalova 2006).
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