Supplementary Material Figure 6: Same as Figure 1 for one month of noon-midnight orbits during northern near-summer solstice (Panels a-c) and northern near-winter solstice (Panels d-f), but limited to local times of auroral zone passes of only one hour either side of the 12 MLT and 0 MLT sectors. Panels (a), (b), (d) and (e) use the same analysis as (a)-(d) in Figure 1, while Panels (c) and (f) show the occurrence distributions of individual events on a MLAT vs MLT map. The same characteristic northern preference in Figure 1 is also verified here.