Disk fraction as a function of radial position for the visible-selected young stars with (filled red circles) and without (open blue circles) disks, subject to the mass and extinction requirements discussed in the text. The center positions and annuli are the same as Figure 9. Note that the visible sample does not pick up the same increase in disk fraction in the outer annuli as the X-ray sample. This could be due to preferentially selecting against reddened disk sources when requiring a V-band detection.