1. Planetary Sciences Section, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California.
2. Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, Colorado.
3. Institute for Geophysics, The University of Texas at Austin, Austin, Texas.
4. Sciences and Exploration Directorate, Goddard Space Flight Center, Greenbelt, Maryland.
5. Space Sciences and Astrobiology Division, Ames Research Center, Moffett Field, California.
6. Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa.
7. Science and Technology Office, Marshall Space Flight Center, Huntsville, Alabama.
8. Planetary Science Directorate, Southwest Research Institute, Boulder, Colorado.
9. The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland.
10. Science Research and Analysis Program Office, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California.
11. School of Earth and Space Exploration, Arizona State University, Tempe, Arizona.
12. Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts.