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Fig. 7.

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Distribution of the diameters resulting from fitting our models to the 86 GHz and 230 GHz datasets. The turquoise and orange histograms show, respectively, the result of model fitting to GRRT data with an angular scale of 3.8 μas and 4.2 μas. The vertical lines show the observational range for the diameter of the ring, using the same values as Fig. 6.

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