Fig. 2

Day-to-day variations of the peak PRE (magenta line) and a, b electron density, c, d eastward current density, and e, f eastward neutral wind at the time when the PRE reached a peak during (top) March–April and (bottom) September–October in 2012 over (10° N, 100° E; GAIA co-ordinates) near Chumphon in Thailand