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Fig. 11

image

PDF of Maddalena including the very low column density range down to Av ~ 0.2 mag. The dashed line indicates the Av = 0.5 mag level used to derive the amplitude of the PDF (in this case 0.06) to be compared to Fig. 10 in order to determine the uncertainty of the correction (in this case 0.5–0.55).

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