1. Max-Planck-Institut für Sonnensystemforschung; Katlenburg-Lindau Germany
2. Department of Physics and Technology; University of Bergen; Bergen Norway
3. Max-Planck-Institut für Extraterrestrische Physik; Garching Germany
4. Center for Solar-Terrestrial Research; New Jersey Institute of Technology; Newark New Jersey USA
5. Southwest Research Institute; San Antonio Texas USA
6. Department of Physics and Astronomy; University of Texas at San Antonio; San Antonio Texas USA
7. Swedish Institute of Space Physics; Kiruna Sweden
8. Institut für Experimentelle und Angewandte Physik; Christian-Albrechts-Universität Kiel; Kiel Germany
9. Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA