A_V vs. distance plot for the regions containing Gal 110-13 (closed circles) and CB 248 (open circles). The dashed vertical line is drawn at 345 pc inferred from the procedure described in Maheswar et al. (2010). The dash-dotted curve represents the increase in the extinction towards the Galactic latitude of b = −13° as a function of distance produced from the expressions given by Bahcall & Soneira (1980). Typical error bars are shown on a few data points.