Southwest Research Institute, PO Drawer 28510, 6220 Culebra Road, San Antonio, TX 78228-0510, USA
Southwest Research Institute, PO Drawer 28510, 6220 Culebra Road, San Antonio, TX 78228-0510, USA
Southwest Research Institute, PO Drawer 28510, 6220 Culebra Road, San Antonio, TX 78228-0510, USA
Southwest Research Institute, PO Drawer 28510, 6220 Culebra Road, San Antonio, TX 78228-0510, USA
Southwest Research Institute, PO Drawer 28510, 6220 Culebra Road, San Antonio, TX 78228-0510, USA
Southwest Research Institute, PO Drawer 28510, 6220 Culebra Road, San Antonio, TX 78228-0510, USA
Radiation Safety Institute of Canada, 1120 Finch Ave. W., Suite 607, Toronto, ON M3J-3H7, Canada
University of Michigan, Space Physics Research Laboratory, Department of Atmospheric, Oceanic, and Space Sciences, 2455 Hayward St., Ann Arbor, MI 48109-2143, USA
University of Michigan, Space Physics Research Laboratory, Department of Atmospheric, Oceanic, and Space Sciences, 2455 Hayward St., Ann Arbor, MI 48109-2143, USA
Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surry, RH5 6NT, United Kingdom
Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surry, RH5 6NT, United Kingdom
Swedish Institute of Space Physics, Box 812, Kiruna, S-98 128, Sweden
Swedish Institute of Space Physics, Box 812, Kiruna, S-98 128, Sweden
Centre d'Étude Spatiale des Rayonnements, BP-4346, Toulouse, F-31028, France