1. Lockheed Martin Advanced Technology Center; Palo Alto; California; USA
2. Los Alamos National Laboratory; Los Alamos; New Mexico; USA
3. Institute for the Study of Earth, Oceans and Space; University of New Hampshire; Durham; New Hampshire; USA
4. Department of Physics and Astronomy; University of Montana; Billings; Montana; USA
5. Heliophysics Science Division; NASA Goddard Space Flight Center; Greenbelt; Maryland; USA
6. Astronomy Department; Boston University; Boston; Massachusetts; USA
7. Physics Institute; University of Bern; Bern; Switzerland