value unc_up unc_lo author ref method 4.15 0.150 0.150 Masiero 2012ApJ...759L...8M NEATM 5.34 0.070 0.070 Masiero 2014ApJ...791..121M NEATM 5.66 0.082 0.082 Masiero 2011ApJ...741...68M NEATM