1. Department of Atmospheric, Oceanic, and Space Sciences University of Michigan Ann Arbor Michigan USA
2. Astronomy Department University of California Berkeley California USA
3. Code 699 NASA Goddard Space Flight Center Greenbelt Maryland USA
4. Department of Physics Concordia College Moorhead Minnesota USA
5. School of Physics and Astronomy University of Minnesota Minneapolis Minnesota USA
6. NASA Ames Research Center Moffet Field California USA
7. Institute for Astronomy University of Hawai‘i at Mānoa Honolulu Hawaii USA
8. Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México México City México
9. NASA Johnson Space Center Houston Texas USA
10. LASP University of Colorado Boulder Colorado USA
11. Geophysical Laboratory Carnegie Institution of Washington Washington District of Columbia USA