value unc_up unc_lo author ref method 0.325 0.0380 0.0380 Masiero 2012ApJ...759L...8M NEATM 0.360 0.0429 0.0429 Masiero 2011ApJ...741...68M NEATM 0.410 0.0500 0.0500 Masiero 2014ApJ...791..121M NEATM