S. Huang, M. Haynes, R. Giovanelli, and J. Brinchmann. (2012)cite arxiv:1207.0523Comment: 21 pages (2 columns), 14 figures. Accepted for publication in ApJ. Version with full-resolution figures is available at http://egg.astro.cornell.edu/alfalfa/pubs/Huang2012b_120702.pdf.