Sample episodes with pre- and post-episodes. Left panel: storm episode F298 with a pre-episode. Right panel: episode F036 with a post-episode. We show the extracted SEDs displayed versus time (in hours of SCET, spacecraft event time) and frequency. The frequency range (with linear scale from 1.8 to 16.2 MHz) in the left and right panels are exactly the same. In the left panel nine hours are displayed, and in the right panel it is seven hours. The colors indicate the SED pixel intensities in dB above background.