Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042 Graz, Austria

Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin-Luther-King Jr. Blvd., 101 Tiernan Hall, Newark, NJ 07102-1982, USA

Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042 Graz, Austria

Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042 Graz, Austria

Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095, USA

Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042 Graz, Austria

Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042 Graz, Austria

Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Yoshinodai 3-1-1, Sagamihara 229-8510, Japan

Space Science Laboratory, University of California, 7 Gauss Way #7450, Berkeley, CA 94720-7450, USA

Space Weather Prediction Center, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, CO 80305, USA

Institut für Geophysik und extraterrestrische Physik, Technische Universität Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany

Space Science Laboratory, University of California, 7 Gauss Way #7450, Berkeley, CA 94720-7450, USA

Space Science Laboratory, University of California, 7 Gauss Way #7450, Berkeley, CA 94720-7450, USA

Department of Physics, University of Alberta, 11322 – 89 Avenue, T6G 2G7 Edmonton, Alberta, Canada