1. Center for Space Physics; Boston University; Boston Massachusetts USA
2. LPAP; Université de Liège; Liege Belgium
3. AOSS Department; University of Michigan; Ann Arbor Michigan USA
4. Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
5. Southwest Research Institute; San Antonio Texas USA
6. Department of Physics and Astronomy; University of Leicester; Leicester UK
7. Blackett Laboratory; Imperial College; London UK
8. LESIA, Observatoire de Paris; UPMC, CNRS, Université Paris Diderot; Meudon France
9. Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
10. Department of Science; Central Arizona College; Coolidge Arizona USA