Same as figure 6, but SFE is averaged over a 0.1r/r₂₅ width. Blue triangles, black circles, and red squares indicate SA, SAB, and SB galaxies, respectively. In order to make the difference in SFE among galaxy types more visible, data points for SA and SB galaxies in each bin are offset to the left- and the right-hand sides, respectively. The error bars indicate the scatter of data points shown in figure 6.