1. NASA Goddard Space Flight Center Greenbelt MD USA
2. Center for Integrated Plasma Studies University of Colorado Boulder Boulder CO USA
3. Department of Physics and Astronomy West Virginia University Morgantown VW USA
4. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
5. Space Sciences Laboratory University of California at Berkeley Berkeley CA USA
6. Department of Physics and Astronomy University of Iowa Iowa City IA USA