Bar length distribution in terms of the galaxy Hubble stage. The blue line corresponds to the running mean, with the standard error of the mean indicated with an error bar. The green vertical line delimits the region of S0 galaxies. The first row displays the bar length (in units of kpc) vs. T. The red line shows the running mean of the radius of maximum ellipticity, with an offset of + 0.25 in the x-axis. Shown in the second and third rows are the distributions of bar length (visual estimate), normalized by R_25.5 and h_R. To avoid overlapping of points, the T values in the x-axis have been randomly displaced from the integer.