value unc_up unc_lo author ref method 0.348 0.0555 0.0555 Masiero 2011ApJ...741...68M NEATM 0.423 0.0320 0.0320 Masiero 2012ApJ...759L...8M NEATM 0.440 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM