1. Heliophysics Science Division; NASA Goddard Space Flight Center; Greenbelt Maryland USA
2. Center for Space Plasma Physics; Space Science Institute; Boulder Colorado USA
3. Institute of Geophysics and Planetary Physics; University of California, Los Angeles; Los Angeles California USA
4. Institute for Scientific Research; Boston College; Chestnut Hill Massachusetts USA
5. Atmospheric, Oceanic, and Space Science (AOSS); University of Michigan; Ann Arbor Michigan USA
6. Department of Earth and Space Sciences; University of California, Los Angeles; Los Angeles California USA