Fig. 1From: Equatorial sporadic E-layer abnormal density enhancement during the recovery phase of the December 2006 magnetic storm: A case studyThe figure shows three panels with the variation of the Dst index on the top, the variation of the fbEs (green line) and ftEs (brown line) at São Luís in the middle panel, and the variation of the X-ray solar radiation intensity measured in the range 1.0–8.0 Å (blue line) from December 12 to 18, 2006 (bottom panel).Back to article page