Fig. 5
Colour-ratio images of R905/R750 measured at nine different viewing zenith angles with a fixed incident angle of 45°. The viewing angles and phase angles are given in each image. All ratio images are stretched from 0.5 to 1.5 with pixel values smaller than 0.5 and larger than 1.5 set to 0.5 and 1.5, respectively. The pixels outside the sample area are masked.
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