value unc_up unc_lo author ref method 0.160 0.2000 0.2000 Nugent 2016AJ....152...63N NEATM 0.253 0.0336 0.0336 Masiero 2011ApJ...741...68M NEATM 0.277 0.0701 0.0701 Masiero 2011ApJ...741...68M NEATM