value unc_up unc_lo author ref method 2.89 0.778 0.778 Masiero 2011ApJ...741...68M NEATM 3.00 0.650 0.650 Nugent 2016AJ....152...63N NEATM 3.69 0.172 0.172 Masiero 2011ApJ...741...68M NEATM