value unc_up unc_lo author ref method 0.248 0.0453 0.0453 Masiero 2011ApJ...741...68M NEATM 0.260 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM 0.403 0.0350 0.0350 Masiero 2012ApJ...759L...8M NEATM