Weighted surface albedo of the undifferentiated plains NE of Soi crater (133°W, 30°N) (red triangles) and the dunes of the Belet sand sea (237°W, 5°N) (black triangles). This figure shows results from the data analysis presented in Solomonidou et al. (2016, 2018) and Lopes et al. (2016), provided as context for the present work. The percentages next to the names in the labels correspond to the haze contributions to the data with respect to Huygens’ Descent Imager/Spectral Radiometer (DISR) measurements.