1. Swedish Institute of Space Physics Uppsala Sweden
2. Space Science Center University of New Hampshire Durham NH USA
3. Southwest Research Institute San Antonio TX USA
4. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
5. Department of Space and Plasma Physics, KTH Royal Institute of Technology Stockholm Sweden
6. IGPP/EPSS University of California Los Angeles CA USA
7. NASA Goddard Space Flight Center Greenbelt MD USA
8. Applied Physics Laboratory Johns Hopkins University Laurel M USA