Fig. 2From: On new two-dimensional UHF radar observations of equatorial spread F at the Jicamarca Radio ObservatoryRange–time–intensity (RTI) map for the observations made by beam pointed closest to zenith on July 16–17, 2021. The observations made by this beam only show weak F-region echoes with a poorly developed radar plume appearing around 22:30 LT. No post-midnight F-region echoes can be identified in the RTI map for the vertical beamBack to article page