Donald F Argus¹, Bruce Joseph Haines², Michael B Heflin³, Kevin Gaastra², Athina Peidou², Felix W Landerer², David N Wiese⁴, Corne Kreemer⁵, Geoffrey Blewitt⁶, William C Hammond⁷, Matthew Swarr⁸, Hilary R Martens⁹, Zachary Young¹⁰, Nicholas Lau¹¹, Adrian A Borsa¹², Roland Hohensinn¹³, Yehuda Bock¹³ and Angelyn W Moore², (1)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (3)Jet Propulsion Lab, Pasadena, United States, (4)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (5)University of Nevada, Reno, Nevada Bureau of Mines and Geology, Reno, United States, (6)Nevada Geodetic Laboratory, Nevada Bureau of Mines and Geology, University of Nevada - Reno, Reno, NV, United States, (7)Nevada Geodetic Laboratory, Nevada Bureau of Mines and Geology, University of Nevada - Reno, Reno, United States, (8)University of Montana, Geosciences, Missoula, MT, United States, (9)Department of Geosciences, University of Montana, Missoula, United States, (10)Nevada Geodetic Lab, Nevada Bureau of Mines and Geology, University of Nevada, Reno, Reno, United States, (11)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (12)Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States, (13)Scripps Institution of Oceanography, University of California San Diego, Institute of Geophysics and Planetary Physics, La Jolla, United States