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Fig. 8


RVλmax plane. The red dots mark the CCM RV values as a function of λmax determinedby best-fitting the IR extinction curves with the CCM extinction law, the blue dots mark the RV values determined by fitting the WD01 model to all observations, and the green triangles mark the RV values from Wegner (2002) determined by the extrapolation method (see Table 2). The black line shows the RV relationship from Whittet & van Breda (1978) and its 1σ uncertainty.

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