1. Space Sciences Laboratory University of California Berkeley CA USA
2. Department of Earth Planetary and Space Sciences University of California Los Angeles CA USA
3. Laboratory for Atmospheric and Space Physics University of Colorado Boulder CO USA
4. Goddard Space Flight Center Greenbelt MD USA
5. Department of Physics and Astronomy University of Iowa Iowa City IA USA
6. IRAP CNRS ‐ University of Toulouse ‐ UPS ‐ CNES Toulouse France