value unc_up unc_lo author ref method 21.91 0.220 0.220 Masiero 2012ApJ...759L...8M NEATM 22.78 6.570 6.570 Nugent 2016AJ....152...63N NEATM 24.93 0.640 0.640 Masiero 2012ApJ...759L...8M NEATM 25.29 9.420 9.420 Nugent 2016AJ....152...63N NEATM