1. Swedish Institute of Space Physics; Uppsala Sweden
2. Space Research Institute; Austrian Academy of Sciences; Graz Austria
3. Department of Geophysics and Space Sciences; Eötvös Loránd University; Budapest Hungary
4. Geodetic and Geophysical Institute, RCAES; Hungarian Academy of Sciences; Sopron Hungary
5. Space and Plasma Group; Royal Institute of Technology; Stockholm Sweden
6. Laboratory of Atmospheric and Space Physics; University of Colorado Boulder; Boulder Colorado USA
7. Institute of Geophysics and Planetary Physics; University of California; Los Angeles USA
8. Laboratoire de Physique des Plasmas; CNRS/Ecole Polytechnique/UPMC/Univ. Paris Sud/Obs. de Paris; Paris France
9. NASA Goddard Space Flight Center; Greenbelt Maryland USA
10. Southwest Research Institute; San Antonio Texas USA
11. Astronomy Department; University of Maryland; College Park Maryland USA
12. IRAP; CNRS; Toulouse France
13. CNRS; Toulouse France
14. JAXA; Tokyo Japan