1. National Institute of Polar Research; Tokyo Japan
2. NASA Goddard Space Flight Center; Greenbelt Maryland USA
3. Physics and Astronomy Department; Rice University; Houston Texas USA
4. Los Alamos National Laboratory; Los Alamos New Mexico USA
5. Center for Space Science; University of Texas at Dallas; Richardson Texas USA
6. NOAA Space Environment Laboratory; Boulder Colorado USA
7. Air Force Research Laboratory; Hanscom Air Force Base Massachusetts USA