value unc_up unc_lo author ref method 4.96 0.700 0.700 Nugent 2016AJ....152...63N NEATM 5.59 1.260 1.260 Nugent 2016AJ....152...63N NEATM 6.60 0.270 0.270 Masiero 2012ApJ...759L...8M NEATM