value unc_up unc_lo author ref method 0.329 0.0410 0.0410 Masiero 2012ApJ...759L...8M NEATM 0.374 0.0792 0.0792 Masiero 2011ApJ...741...68M NEATM 0.380 0.0500 0.0500 Masiero 2014ApJ...791..121M NEATM