(Upper panel) Electron fluxes and (lower panel) proton fluxes from GOES-13, 14 and 15 during July 2010, from Telescope 1 and the lowest energy channel (40 keV electrons, 95 keV protons). The upper dashed line indicates the approximate limit between plasma sheet electron fluxes on open drift paths (above) and fluxes on closed drift paths (below). The lower dashed line indicates the level below which the fluxes correspond to dropouts.