Figure 3
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A time series of virtual height oscillations from October 06, 2020. Panel A shows the four CODAR stations: BRIG, CORE, NAPL, and PINS color coded by transmission frequency. Panel B is the Digisonde station WP 937, located in Virginia. Panel C is the Digisonde station AU 930, located in Texas, and Panel D is the Digisonde station EG 931, located in Florida. All virtual height traces shown in each panel are for O-mode propagation only.
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