1. Department of Astrophysical and Planetary Sciences University of Colorado Boulder CO USA
2. Laboratory of Atmospheric and Space Sciences University of Colorado Boulder CO USA
3. Southwest Research Institute San Antonio TX USA
4. Department of Physics University of New Hampshire Durham NH USA
5. Royal Institute of Technology Stockholm Sweden
6. Swedish Institute of Space Physics Uppsala Sweden
7. IGGP University of California, Los Angeles Los Angeles CA USA
8. Laboratoire de Physique des Plasmas Palaiseau France
9. Space Research Institute Austrian Academy of Sciences Graz Austria
10. The Blackett Laboratory Imperial College London London UK
11. Space Sciences Laboratory University of California, Berkeley Berkeley CA USA
12. Goddard Space Flight Center NASA Greenbelt MD USA
13. IREAP University of Maryland College Park MD USA