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