value unc_up unc_lo author ref method 8.89 0.110 0.110 Masiero 2014ApJ...791..121M NEATM 9.51 0.290 0.290 Masiero 2012ApJ...759L...8M NEATM 9.83 0.208 0.208 Masiero 2011ApJ...741...68M NEATM