1. Space Sciences Laboratory University of California Berkeley Berkeley CA USA
2. Department of Physics and Astronomy West Virginia University Morgantown WV USA
3. Lunar and Planetary Laboratory University of Arizona Tucson AZ USA
4. Astronomy Department Boston University Boston MA USA
5. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
6. Center for Research and Exploration in Space Science and Technology NASA Goddard Space Flight Center Greenbelt MD USA
7. University of Maryland Baltimore County MD USA
8. University of Maryland College Park MD USA