1. Department of Atmospheric, Oceanic and Space Sciences; University of Michigan; Ann Arbor Michigan USA
2. Heliophysics Science Division; NASA Goddard Space Flight Center; Greenbelt Maryland USA
3. Department of Physics and Astronomy; University of Leicester; Leicester UK
4. Laboratory for Solar and Atmospheric Physics; University of Colorado Boulder; Boulder Colorado USA
5. Institut für Geophysik und Extraterrestrische Physik; Technische Universität Braunschweig; Braunschweig Germany
6. Southwest Research Institute; San Antonio Texas USA
7. Goddard Planetary Heliophysics Institute; University of Maryland, Baltimore County; Baltimore USA
8. Goddard Earth Sciences and Technology Center; University of Maryland, Baltimore County; Baltimore USA
9. School of Physics and Astronomy; Queen Mary University of London; London UK
10. Blackett Laboratory; Imperial College; London UK
11. Department of Earth, Ocean, and Atmospheric Sciences; University of British Columbia; Vancouver British Columbia Canada
12. Planetary Science Institute; Tucson Arizona USA
13. The Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
14. Department of Terrestrial Magnetism; Carnegie Institution of Washington; Washington District of Columbia USA
15. Lamont-Doherty Earth Observatory; Columbia University; Palisades New York USA