The 10 MeV SEP maximum intensity at 1 AU during the first 10 h of the event, as a function of longitude. The thin dashed curves show the fitted Gaussian profiles with , 33°, 23° for  0.1 AU (red curve), 0.3 AU (blue curve) and 1 AU (green curve), respectively, and 10° for the reference FP simulation case with  0.3 AU (black curve). The gray area depicts the observational range σ_φ,⁡max = 30° − 50 °.