value unc_up unc_lo author ref method 13.27 0.094 0.094 Masiero 2011ApJ...741...68M NEATM 13.32 0.090 0.090 Masiero 2014ApJ...791..121M NEATM 14.84 0.530 0.530 Masiero 2012ApJ...759L...8M NEATM