1. Space Science Center University of New Hampshire Durham NH USA
2. NASA Goddard Space Flight Center Greenbelt MD USA
3. Department of Physics The Catholic University of America Washington DC USA
4. Department of Physics University of Maryland College Park MD USA
5. Center for Space Physics and Department of Astronomy Boston University Boston MA USA
6. University of Maryland, Baltimore County Baltimore MD USA
7. Earth Oceans and Space Southwest Research Institute Durham NH USA