Comparison of surface texture around MAT03-07 from September 2014 through March, 2015. a) Smooth deposits were prevalent on September 20, 2014. b) Surface roughness had increased at various locations by February 14, 2015. c) Honeycomb features were distinguishable on March 28, 2015. The observation in (a) was acquired at the phase angle of 65◦ with the pixel resolution of 0.48 m. b) was taken at the phase angle of 82◦ with the pixel resolution of 0.56 m. c) was taken at the phase angle of 68◦ with the pixel resolution of 0.44 m (Table A.1). Nomenclature is as given in Table 1.