Figure 2


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(a) Solar wind velocity, Vsw. (b) Interplanetary magnetic field, IMF. (c) SYM-H index. (d) AE index during October 1, 2008. (e) Average vertical drifts (red line) over Jicamarca. Error bars denote the standard deviations on the average drifts. The black curve shows the corresponding quiet time patterns. (f) An example of the Range-Time-Intensity map of echoes measured by JULIA. (g) Average HmF2 over Jicamarca on October 1, 2008.

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