1. European Space Agency, ESA/ESAC; Madrid Spain
2. Swedish Institute of Space Physics; Uppsala Sweden
3. Institut de Recherche en Astrophysique et Planétologie, CNRS, UPS, CNE; Université de Toulouse; Toulouse France
4. Southwest Research Institute; San Antonio Texas USA
5. Department of Physics and Astronomy; University of Texas at San Antonio; San Antonio Texas USA
6. NASA Goddard Space Flight Center; Greenbelt Maryland USA
7. Laboratoire de Physique des Plasmas, UMR7648, CNRS, Ecole Polytechnique, UPMC Univ Paris 06, Univ. Paris-Sud, Observatoire de Paris; Paris France
8. Royal Institute of Technology; Stockholm Sweden
9. Laboratory of Atmospheric and Space Physics; University of Colorado Boulder; Boulder Colorado USA
10. Earth Planetary and Space Sciences; University of California; Los Angeles California USA