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Fig. 14

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(a) The observed variations of the conductivity-corrected geomagnetic indices with fraction of year, F, shown as means in 36 equal-sized bins in F as a fraction of their overall mean. In all panels, red lines are for the northern hemisphere index, blue for the south and black for the average of the two. (a) cc(dawn)(F))/(〈cc(dawn)〉all; (b) cc(noon)(F))/(〈cc(noon)〉all; (c) cc(dusk)(F))/(〈cc(dusk)〉all; and (d) cc(midn)(F))/(〈cc(midn〉all.

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