value unc_up unc_lo author ref method 3.06 0.650 0.650 Nugent 2016AJ....152...63N NEATM 4.91 1.440 1.440 Nugent 2016AJ....152...63N NEATM 5.55 0.067 0.067 Masiero 2011ApJ...741...68M NEATM