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Fig. 9

Fig. 9 Refer to the following caption and surrounding text.

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Ratio between ring width and radial distance from the central star for 18 out of 30 disk observations. Measurements are separated according to the SPF-based classification: red markers indicate Category I, and blue markers indicate Category II. The dashed colored lines represent the mean value of ∆r/r for each category, where ∆r is the FWHM of the fitted Gaussian.

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