1. The Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
2. NASA Goddard Space Flight Center; Greenbelt Maryland USA
3. Now at Denali Scientific; Healy Alaska USA
4. Aerospace Corporation; El Segundo California USA
5. LASP; University of Colorado Boulder; Boulder Colorado USA
6. Space Science Center; University of New Hampshire; Durham New Hampshire USA
7. Los Alamos National Laboratory; Los Alamos New Mexico USA
8. University of California; Los Angeles California USA
9. Space Research Institute; Austrian Academy of Sciences; Graz Austria
10. Southwest Research Institute; San Antonio Texas USA
11. Department of Physics and Astronomy; University of Texas at San Antonio; San Antonio Texas USA