value unc_up unc_lo author ref method 0.202 0.0350 0.0350 Masiero 2012ApJ...759L...8M NEATM 0.351 0.0598 0.0598 Masiero 2011ApJ...741...68M NEATM 0.420 0.0500 0.0500 Masiero 2014ApJ...791..121M NEATM