Fig. 2

Directional (90° pitch angle) electron differential fluxes as measured by a ERG (133–160 keV, 160–195 keV, 236–285 keV), b GOES-15 and c GOES-13 (100–200 keV, 200–350 keV, 350–600 keV), respectively, and also as computed at each spacecraft position using the model with relativistic effects (d, e, f) and without relativistic effects (g, h, i). The results simulated at each satellite position correspond to each energy range