value unc_up unc_lo author ref method 10.69 0.305 0.305 Masiero 2011ApJ...741...68M NEATM 11.02 0.490 0.490 Masiero 2014ApJ...791..121M NEATM 9.51 0.300 0.300 Masiero 2012ApJ...759L...8M NEATM