1. Department of Physics and Astronomy; Dartmouth College; Hanover New Hampshire USA
2. Physics Department and Santa Cruz Institute for Particle Physics; University of California; Santa Cruz California USA
3. Los Alamos National Laboratory; Los Alamos New Mexico USA
4. Cooperative Institute for Research in Environmental Sciences; University of Colorado Boulder; Boulder Colorado USA
5. Department of Physics; Augsburg College; Minneapolis Minnesota USA
6. Southwest Research Institute; San Antonio Texas USA
7. Space Science Applications Laboratory; Aerospace Corporation; Los Angeles California USA
8. Institute for the Study of Earth, Oceans, and Space; University of New Hampshire; Durham New Hampshire USA