value unc_up unc_lo author ref method 11.94 0.070 0.070 Masiero 2014ApJ...791..121M NEATM 12.30 0.152 0.152 Masiero 2011ApJ...741...68M NEATM 13.30 1.630 1.630 Masiero 2012ApJ...759L...8M NEATM