Simulation results for virtual observers at different longitudes. Panels a and b: give the omnidirectional intensity-time profiles (upper panel) together with solar wind speed (lower panel) for the W30 and E30 observers, respectively. Panel c: gives the peak intensities versus energy for different observers. Panel d: is a snapshot of the omnidirectional particle intensity plotted in grey shades on top of the solar wind speed at constant HEEQ latitude θ = 4.5°.