value unc_up unc_lo author ref method 0.232 0.0232 0.0232 Masiero 2011ApJ...741...68M NEATM 0.270 0.0300 0.0300 Masiero 2014ApJ...791..121M NEATM 0.519 0.0760 0.0760 Masiero 2012ApJ...759L...8M NEATM