Space Sciences Laboratory, Box 7450 University of California, Berkeley, CA 94720, USA
Space Sciences Laboratory, Box 7450 University of California, Berkeley, CA 94720, USA; University of Washington, Earth and Space Sciences, Box 351640, Seattle, WA 98195, USA
Space Sciences Laboratory, Box 7450 University of California, Berkeley, CA 94720, USA; Max-Planck-Institut für Aeronomie, Max-Planck-Str. 2, Katlenburg-Lindau, 37191 Germany
Space Sciences Laboratory, Box 7450 University of California, Berkeley, CA 94720, USA
Space Sciences Laboratory, Box 7450 University of California, Berkeley, CA 94720, USA
Space Sciences Laboratory, Box 7450 University of California, Berkeley, CA 94720, USA
University of New Hampshire, Space Science Center, Science and Engineering Research Center, Durham, NH 03824, USA
CESR/CNRS, 9 Avenue du Colonel Roche, Toulouse Cedex 4, B.P. 4346 France
CESR/CNRS, 9 Avenue du Colonel Roche, Toulouse Cedex 4, B.P. 4346 France
CESR/CNRS, 9 Avenue du Colonel Roche, Toulouse Cedex 4, B.P. 4346 France
CESR/CNRS, 9 Avenue du Colonel Roche, Toulouse Cedex 4, B.P. 4346 France
University of Washington, Earth and Space Sciences, Box 351640, Seattle, WA 98195, USA
Max-Planck-Institut für extraterrestrische Physik, Garching bei München, 85748 Germany
ESA/ESTEC, Postbus 299, Keplerlaan, 1, Noordwijk, 2200 AG Netherlands
Istituto di Fisicadello Spazio, Interplanetario, Via del Fosso del Cavaliere, Roma, 00133 Italy
Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2BZ United Kingdom
Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2BZ United Kingdom
Swedish Institute of Space Physics, Uppsala Division, Box 537, Uppsala, SE-751 21 Sweden