value unc_up unc_lo author ref method 11.41 0.300 0.300 Masiero 2012ApJ...759L...8M NEATM 12.77 0.050 0.050 Masiero 2014ApJ...791..121M NEATM 13.36 0.066 0.066 Masiero 2011ApJ...741...68M NEATM