1. School of Physics and AstronomyUniversity of Minnesota, Twin Cities Minneapolis MN USA
2. The Johns Hopkins University Applied Physics Laboratory Laurel MD USA
3. Department of PhysicsMontana State University Bozeman MT USA
4. Space Science LaboratoryThe University of California Berkeley CA USA
5. Aerospace Corporation El Segundo CA USA
6. Department of Space Physics, Institute of Atmospheric PhysicsCzech Academy of Sciences Prague Czech Republic
7. Department of PhysicsUniversity of New Hampshire Durham NH USA
8. Department of Physics and AstronomyUniversity of Iowa Iowa City IA USA