1. Department of Physics and Astronomy The University of Iowa Iowa City IA USA
2. The Johns Hopkins University Applied Physics Laboratory Laurel MD USA
3. Department of Space Physics, Institute of Atmospheric Physics The Czech Academy of Sciences Prague Czechia
4. Faculty of Mathematics and Physics Charles University Prague Czechia
5. Space Research Corporation Annapolis MD USA
6. Goddard Space Flight Center Greenbelt MD USA
7. Southwest Research Institute San Antonio TX USA
8. University of Texas at San Antonio San Antonio TX USA
9. Jet Propulsion Laboratory Pasadena CA USA