1. Laboratory for Atmospheric and Space Physics University of Colorado Boulder CO USA
2. Southwest Research Institute San Antonio TX USA
3. Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX USA
4. Department of Astrophysical Sciences Princeton University Princeton NJ USA
5. Space Research Corporation Annapolis MD USA
6. Goddard Space Flight Center Greenbelt MD USA
7. Jet Propulsion Laboratory/California Institute of Technology Pasadena CA USA