value unc_up unc_lo author ref method 3.73 0.690 0.690 Nugent 2016AJ....152...63N NEATM 4.80 1.220 1.220 Nugent 2016AJ....152...63N NEATM 5.29 1.440 1.440 Masiero 2012ApJ...759L...8M NEATM