Fig. 4From: Occurrence of the blanketing sporadic E layer during the recovery phase of the October 2003 superstormTemporal evolution of the fbEs (upper panel) and of the EEJ ground strength (bottom panel) obtained from 00:00 UT on November 2 to 24:00 UT on November 3, 2003. The red lines show the quantities measured during this interval with blue lines showing the mean quiet-time quantities calculated from 3-day average values acquired a few days before the superstormBack to article page