value unc_up unc_lo author ref method 7.00 1.650 1.650 Nugent 2016AJ....152...63N NEATM 7.79 1.840 1.840 Nugent 2016AJ....152...63N NEATM 8.00 0.260 0.260 Masiero 2012ApJ...759L...8M NEATM