Fig. 4.
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Mean spectra normalised to BLU associated with ROIs in Fig. C.1. The error bars represent 1σ standard errors. The number of pixels of each ROI is reported in the legend. The spectra are labelled as Pbn, Prn, Ptn, and Dbn, where P and D denote Phobos and Deimos; b, r, and t refer to the blue, red, and transitional units; and n indicates the spectrum number.
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