Fig. 4

Best-fit regions for the sample of A-type stars with a model assuming narrow disks; width is ΔR = R/10 while it is ΔR = R/2 in Fig. 3. The peak K-S test probability is 77.6% in this new fit. See the legend of Fig. 3 for more details. Compare the 90% lower and upper limits for Mmid and Dc relative to Fig. 3.
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