value unc_up unc_lo author ref method 10.49 3.290 3.290 Masiero 2012ApJ...759L...8M NEATM 12.25 0.200 0.200 Masiero 2011ApJ...741...68M NEATM 14.11 4.150 4.150 Masiero 2017AJ....154..168M NEATM