1. The Johns Hopkins University Applied Physics Laboratory Laurel MD USA
2. Department of Physics Imperial College London London UK
3. Now at Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
4. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
5. Now at Space Science Laboratory University of California Berkeley CA USA
6. Southwest Research Institute San Antonio TX USA
7. Department of Physics and Astronomy University of Texas at San Antonia San Antonio TX USA
8. NASA Goddard Space Flight Center Greenbelt MD USA
9. Department of Astrophysical Sciences Princeton University Princeton NJ USA
10. Department of Space Science University of Alabama in Huntsville Huntsville AL USA
11. CNRS/Ecole Polytechnique/Sorbonne Université/Univ. Paris Sud/Observatoire de Paris Paris France
12. Space Science Center University of New Hampshire Durham NH USA