Fig. 2From: Multi-instrumented observations of the equatorial F-region during June solstice: large-scale wave structures and spread-FRTI maps for July 24–25, July 27–28, and August 3–4, 2016. Digisonde estimates of hmF2 (white line with markers) and h’F (solid yellow line) are also shown. The auroral electrojet (AE) index is also shown, below each RTI mapBack to article page