Cooperative Institute for Environmental Research, University of Colorado at Boulder, CIRES Bldg., Boulder, CO 80309, ; Space Weather Prediction Center, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, CO 80305,
Space Weather Prediction Center, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, CO 80305,
Space Weather Prediction Center, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, CO 80305,
Institute for Geophysics and Planetary Physics, University of California at Los Angeles, 603 Charles E. Young Drive, Los Angeles, CA 90095,
Institut für Geophysik und Extraterrestrische Physik, Technische Universität zu Braunschweig, Mendelssohnstr. 3, Braunschweig, 38106, Germany
Space Sciences Laboratory, University of California at Berkeley, 7 Gauss Way, Berkeley, CA 94720,
Department of Physics, University of Alberta, Alberta, Canada, 11322 - 89 Avenue, Edmonton, AB T6G 2G7, Canada
Institute for Geophysics and Planetary Physics, University of California at Los Angeles, 603 Charles E. Young Drive, Los Angeles, CA 90095,