value unc_up unc_lo author ref method 0.277 0.0310 0.0310 Masiero 2012ApJ...759L...8M NEATM 0.317 0.0434 0.0434 Masiero 2011ApJ...741...68M NEATM 0.330 0.0600 0.0600 Masiero 2014ApJ...791..121M NEATM