David L Mitchell, University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, Shaosui Xu, Space Sciences Laboratory, University of California Berkeley, Berkeley, CA, United States, David Brain, Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States, James P McFadden, Univ California Berkeley, Berkeley, CA, United States, Christian Xavier Mazelle, University Paul Sabatier Toulouse III, Toulouse Cedex 09, France and Jared R Espley, Goddard Space Flight Center, Greenbelt, MD, United States