value unc_up unc_lo author ref method 10.64 0.350 0.350 Masiero 2012ApJ...759L...8M NEATM 12.43 0.130 0.130 Masiero 2014ApJ...791..121M NEATM 12.51 0.113 0.113 Masiero 2011ApJ...741...68M NEATM