value unc_up unc_lo author ref method 10.04 0.130 0.130 Masiero 2014ApJ...791..121M NEATM 10.34 0.071 0.071 Masiero 2011ApJ...741...68M NEATM 9.55 0.490 0.490 Masiero 2012ApJ...759L...8M NEATM