value unc_up unc_lo author ref method 4.31 1.600 1.600 Masiero 2021PSJ.....2..162M NEATM 4.32 1.150 1.150 Nugent 2016AJ....152...63N NEATM 4.81 0.670 0.670 Masiero 2012ApJ...759L...8M NEATM