1. APL; Laurel MD USA
2. Technologies and Astrophysics Research Institute; Université de Liège; Liège Belgium
3. MSSL, Department of Space and Climate Physics; UCL; Dorking UK
4. SWRI; San Antonio TX USA
5. MPS; Goettingen Germany
6. Laboratory for Atmospheric and Space Physics; University of Colorado Boulder; Boulder CO USA
7. JPL; Pasadena CA USA
8. GSFC; Greenbelt MD USA