Changes in the pitted dust deposits in Ma’at bordered by Maftet. a) Pitted deposits distinct on March 28, 2015. b) Several pitted patches had been smoothed out by May 22, 2016. c), d), e) Sequence of three images taken on January 19, July 11, and November 28, 2015, respectively, showing the evolution of pitted deposits (indicated by the red arrow). The observations in (a) and (b) were taken at the respective phase angles of 74◦ and 105◦, with nearly identical pixel resolutions of 0.61 m. c), d), and e) are of lower resolutions at 2.7 m, 2.9 m, and 2.3 m per pixel, respectively; the phase angles of the last three observations are similar at approximately 90◦ (Table A.1).
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