1. Southwest Research Institute San Antonio TX USA
2. Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX USA
3. Johns Hopkins University Applied Physics Lab Laurel MD USA
4. Department of Astrophysical Sciences Princeton University Princeton NJ USA
5. Department of Physics and Astronomy University of Iowa Iowa City IA USA
6. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
7. Space Research Corporation Annapolis MD USA
8. Goddard Space Flight Center Greenbelt MD USA
9. Department of Electrical Engineering and Information Science, National Institute of Technology (KOSEN) Niihama College Niihama Japan
10. Institut de Recherche en Astrophysique et Planétologie (IRAP) Toulouse France
11. Institute of Geophysics and Meteorology University of Cologne Cologne Germany