1. Geospace Physics Laboratory NASA Goddard Space Flight Center Greenbelt Maryland USA
2. Department of Physics Catholic University of America Washington District of Columbia USA
3. Departmento de Física, Facultad de Ciencias Universidad de Chile Santiago Chile
4. Department of Atmospheric and Oceanic Sciences University of California Los Angeles California USA
5. Space Weather Laboratory NASA Goddard Space Flight Center Greenbelt Maryland USA
6. Department of Physics and Astronomy University of Iowa Iowa City Iowa USA
7. School of Physics and Astronomy University of Minnesota Minneapolis Minnesota USA