value unc_up unc_lo author ref method 8.75 0.280 0.280 Masiero 2014ApJ...791..121M NEATM 9.07 0.112 0.112 Masiero 2011ApJ...741...68M NEATM 9.30 0.270 0.270 Masiero 2012ApJ...759L...8M NEATM