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Fig. 6


Ci (top panel), Ce (central panel) and Cα (bottom panel). In each plot we show two curves for comparison, corresponding to (solid line) and (dot-dashed line). It can be noted that increasing the slope parameter allows us to compensate for the reduction of signal at large i (10%) and e (5%) while minimizing the amplitude of the modulation of the signal at large α for Cα. A residual modulation of Cα with the phase angle is still present for , possibly because regions with intrinsically different albedo have been observed at different phase angles or because of a deviation of the regolith SPPF behavior from the adopted Henyey-Greenstein formulation. Smaller residuals (<3%) can also be noted for Ci and Ce.

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