Fig. A.2

Anisotropy and intensity time profiles of the SEP event on 11 April 2013 observed by STEREO A (left), STEREO B (middle), and ACE (right). Anisotropy plotted in lighter color denotes periods of background intensity for which the anisotropy calculation is very uncertain. The gray-shaded area in the ACE plot marks a period of ion contamination.
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