Fig. 6From: Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation dataSequence of ionograms measured in Jicamarca (12°S, 76.8°W) at a 00:30, b 01:10, c 01:50, and d 02:40 UT on February 2, 2014Back to article page