Occurrence of SEDs as a function of the local time of Cassini and the local time of the storm cell F¹. The different colors classify the SEDs by their emission angle α, i.e., the angle between the local zenith at the storm and Cassini. The black dots show all “direct” SEDs (α ≤ 90°), which propagate in a straight line from the storm to Cassini. The blue and red points show the over-the-horizon (OTH) SEDs in the range of 90° < α < 100° and 100° ≤ α < 135°, respectively. The magenta points show the extreme OTH SEDs with α ≥ 135°. Additionally, the dashed lines separate the day side from the night side (SED storm at 35° south has a solar zenith angle of 90° at local times of 5.6 h and 18.4 h.) For clarity of the plot we have restricted the data to latitudes of Cassini within ± 45° vfrom the equatorial plane, and we have excluded the time from 6–10 March due to the presence of another storm.