Steepness of the far‐UV extinction (c₂) plotted against bump strength (πc₃/2γ) for the stars in the SD region lying between ﹩l=325^{\circ }﹩ and 0° (filled circles) and for those of the rest of the sample (open circles). Also, plotted from upper left to lower right are average points (filled squares) for the Galaxy, LMC (outside LMC 2), LMC 2, and SMC (Misselt et al. 1999; Gordon & Clayton 1998).