value unc_up unc_lo author ref method 5.15 0.150 0.150 Masiero 2012ApJ...759L...8M NEATM 5.56 0.300 0.300 Masiero 2014ApJ...791..121M NEATM 5.91 0.086 0.086 Masiero 2011ApJ...741...68M NEATM