value unc_up unc_lo author ref method 11.49 0.120 0.120 Masiero 2014ApJ...791..121M NEATM 12.14 0.176 0.176 Masiero 2011ApJ...741...68M NEATM 9.86 1.040 1.040 Masiero 2012ApJ...759L...8M NEATM