Fig. 1From: Occurrence of the blanketing sporadic E layer during the recovery phase of the October 2003 superstormTemporal evolution of (top panel) the Dst index, (middle panel) the fbEs (green line) and ftEs (brown line) at SZL, and (bottom panel) the X-ray solar radiation flux measured in the range 0.5–4.0 Å (red line) and 1.0–8.0 Å (blue line)Back to article page