1. The Aerospace Corporation El Segundo CA USA
2. The Johns Hopkins University Applied Physics Laboratory Laurel MD USA
3. Department of Electromagnetism and Electronics University of Murcia Murcia Spain
4. Southwest Research Institute San Antonio TX USA
5. University of Texas at San Antonio San Antonio TX USA
6. Swedish Institute of Space Physics (IRFU) Uppsala Sweden
7. Goddard Space Flight Center National Aeronautics and Space Administration Greenbelt MD USA
8. Laboratory for Atmospheric and Space Physics University of Colorado Boulder CO USA
9. KTH Royal Institute of Technology Stockholm Sweden
10. Department of Physics University of New Hampshire Durham NH USA