value unc_up unc_lo author ref method 13.36 0.250 0.250 Masiero 2014ApJ...791..121M NEATM 13.45 0.530 0.530 Masiero 2012ApJ...759L...8M NEATM 14.25 0.112 0.112 Masiero 2011ApJ...741...68M NEATM