value unc_up unc_lo author ref method 0.273 0.0298 0.0298 Masiero 2011ApJ...741...68M NEATM 0.310 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM 0.381 0.0410 0.0410 Masiero 2012ApJ...759L...8M NEATM