value unc_up unc_lo author ref method 11.21 0.395 0.395 Masiero 2011ApJ...741...68M NEATM 11.87 1.650 1.650 Masiero 2012ApJ...759L...8M NEATM 8.28 1.677 1.677 Masiero 2017AJ....154..168M NEATM