value unc_up unc_lo author ref method 0.204 0.0260 0.0260 Masiero 2012ApJ...759L...8M NEATM 0.220 0.0498 0.0498 Masiero 2011ApJ...741...68M NEATM 0.250 0.0700 0.0700 Masiero 2014ApJ...791..121M NEATM