value unc_up unc_lo author ref method 4.00 0.800 0.800 Nugent 2016AJ....152...63N NEATM 4.93 0.040 0.040 Masiero 2014ApJ...791..121M NEATM 5.31 0.013 0.013 Masiero 2011ApJ...741...68M NEATM