1. Space Research Institute; Austrian Academy of Sciences; Graz Austria
2. Swedish Institute of Space Physics; Uppsala Sweden
3. Department of Earth and Planetary Sciences; Tokyo Institute of Technology; Meguro Japan
4. Institute of Space and Astronautical Science; Japan Aerospace Exploration Agency; Sagamihara Japan
5. Space Sciences Laboratory; University of California; Berkeley California USA
6. Max Planck Institute for Solar System Research; Katlenburg-Lindau Germany
7. Centre d'Etude des Environnements Terrestre et Planétairs; CNRS/IPSL; Vélizy France