1. Southwest Research Institute; San Antonio Texas USA
2. University of Texas; San Antonio Texas USA
3. Los Alamos Laboratory; Los Alamos New Mexico USA
4. CRESST and Geospace Physics Laboratory; NASA Goddard Space Flight Center; Greenbelt Maryland USA
5. Department of Astronomy; University of Maryland; College Park Maryland USA
6. Geospace Physics Laboratory; NASA Goddard Space Flight Center; Greenbelt Maryland USA
7. Auburn University; Auburn Alabama USA