value unc_up unc_lo author ref method 0.174 0.0311 0.0311 Masiero 2011ApJ...741...68M NEATM 0.203 0.0180 0.0180 Masiero 2012ApJ...759L...8M NEATM 0.250 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM