value unc_up unc_lo author ref method 0.249 0.0337 0.0337 Masiero 2011ApJ...741...68M NEATM 0.270 0.0200 0.0200 Masiero 2014ApJ...791..121M NEATM 0.313 0.0430 0.0430 Masiero 2012ApJ...759L...8M NEATM