value unc_up unc_lo author ref method 0.212 0.0270 0.0270 Masiero 2012ApJ...759L...8M NEATM 0.276 0.0356 0.0356 Masiero 2011ApJ...741...68M NEATM 0.290 0.0600 0.0600 Masiero 2014ApJ...791..121M NEATM