value unc_up unc_lo author ref method 12.51 3.460 3.460 Nugent 2016AJ....152...63N NEATM 6.78 1.550 1.550 Nugent 2016AJ....152...63N NEATM 7.72 0.320 0.320 Masiero 2012ApJ...759L...8M NEATM