| Affiliation: | 1. Department of Plasma Physics, Royal Institute of Technology, S100-44, Stockholm, and Uppsala Ionospheric Observatory, Uppsala, Sweden;2. Goddard Space Flight Center, Greenbelt, MA 20771, U.S.A.;3. Herzberg Astrophysical Institute, National Research Council, Ottawa, Canada K1A 0R6;4. Center for Space Sciences, University of Texas at Dallas, Richardson, TX 75082, U.S.A.;5. Department of Atmospheric and Oceanic Science, University of Michigan, Ann Arbor, MI 48109, U.S.A.;7. Center for Research in Experimental Space Science, York University, Toronto, Canada, M3J 1P3 |
