value unc_up unc_lo author ref method 5.64 1.750 1.750 Masiero 2021PSJ.....2..162M NEATM 6.21 1.750 1.750 Nugent 2016AJ....152...63N NEATM 8.01 0.062 0.062 Masiero 2011ApJ...741...68M NEATM