Ashley D Greeley, Catholic University of America, physics, Washington, DC, United States, Shrikanth G Kanekal, NASA GSFC, Greenbelt, MD, United States, Quintin Schiller, Space Science Institute Boulder, Boulder, CO, United States, Daniel N Baker, University of Colorado, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States and David G Sibeck, NASA/GSFC, Greenbelt, MD, United States