[1] Johns Hopkins Appl Phys Lab, Laurel, MD 20723 USA
[2] Imperial Coll London, Dept Phys, South Kensington Campus, London SW7 2AZ, England
[3] Univ Otago, Phys Dept, Dunedin 9010, New Zealand
[4] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA
[5] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
[6] UCLA, Earth Planetary & Space Sci, Los Angeles, CA 90095 USA
[7] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA
[8] Queen Mary Univ London, Dept Phys & Astron, London E1 4NS, England
[9] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA
[10] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[11] Naval Res Lab, Space Sci Div, Washington, DC 20375 USA
[12] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08540 USA
[13] Inst Space Astrophys & Planetol IAPS, Natl Inst Astrophys INAF, I-00133 Rome, Italy
[14] Univ Michigan, Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA
[15] Univ Calif Berkeley, Phys Dept, Berkeley, CA 94720 USA
[16] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England
[17] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN USA
[18] Univ New Hampshire, Dept Phys & Astron, Durham, NH USA
[19] Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA
[20] CALTECH, Pasadena, CA 91125 USA
[21] Univ New Hampshire, Durham, NH 03824 USA
[22] BWX Technol Inc, Washington, DC 20002 USA
[23] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[24] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA
[25] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80303 USA
[26] Dept Phys & Technol, Postboks 6050, N-9037 Tromso, Norway
[27] Adv Heliophys, Pasadena, CA 91106 USA
[28] NASA, Astrophys Sci Div, Goddard Spaceflight Ctr, Greenbelt, MD 20771 USA
[29] Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA
[30] NASA, Ctr Res & Explorat Space Sci & Technol, GSFC, Greenbelt, MD 20771 USA
[31] Florida Inst Technol, Dept Aerosp Phys & Space Sci, Melbourne, FL 32901 USA
[32] Predict Sci Inc, San Diego, CA USA
[33] Univ Toulouse, IRAP, CNRS, CNES,UPS, Toulouse, France
[34] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA