1. The Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
2. NASA Goddard Space Flight Center; Greenbelt Maryland USA
3. The Aerospace Corporation; El Segundo California US
4. Laboratory for Atmospheric and Space Physics; Boulder Colorado USA
5. Space Science Center; University of New Hampshire; Durham New Hampshire USA
6. Los Alamos National Laboratory; Los Alamos New Mexico USA
7. Department of Earth, Planetary, and Space Sciences; University of California; Los Angeles California USA
8. Southwest Research Institute; San Antonio Texas USA
9. Department of Physics and Astronomy; University of Texas at San Antonio; San Antonio Texas USA