Fig. 7
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Spatial variations of the H2O 4.5-µm band-depth indicator. This band depth BD is calculated with respect to the reflectance value at 4.205 µm (BD = (1−R4.48 µm/R4.205 µm)× 100, where R4.48 µm and R4.205 µm are the reflectance values at 4.48 and 4.205 µm, respectively). Negative values indicate a significant contribution of non-ice material in the continuum.
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