value unc_up unc_lo author ref method 0.222 0.0290 0.0290 Masiero 2011ApJ...741...68M NEATM 0.223 0.0300 0.0300 Masiero 2012ApJ...759L...8M NEATM 0.260 0.0300 0.0300 Masiero 2014ApJ...791..121M NEATM