Fig. 9From: Ground-based instruments of the PWING project to investigate dynamics of the inner magnetosphere at subauroral latitudes as a part of the ERG-ground coordinated observation networkOne-day dynamic spectra of H-component magnetic field variations observed at seven stations around the north geomagnetic pole on March 30, 2017. Vertical dashed lines indicate 00 MLT (magnetic local midnight) at each stationBack to article page