1. The Open University
2. Open University
3. Space Science Institute
4. NASA Goddard Space Flight Center and the University of Maryland
5. NASA Goddard Space Flight Center
6. Royal Belgian Institute for Space Aeronomy
7. Belgian Institute for Space Aeronomy (BIRA-IASB)
8. Royal Belgian Institute for Space Aeronomy BIRA-IASB
9. Royal Belgian Institute for Space Aeronomy, BIRA-IASB
10. Belgian Institute for Space Aeronomy
11. Institute for Space Astrophysics and Planetology
12. Instituto de Astrofisica de Andalucia, IAA-CSIC