value unc_up unc_lo author ref method 0.348 0.1820 0.1820 Masiero 2012ApJ...759L...8M NEATM 0.370 0.0879 0.0879 Masiero 2011ApJ...741...68M NEATM 0.410 0.0800 0.0800 Masiero 2014ApJ...791..121M NEATM