value unc_up unc_lo author ref method 4.36 0.300 0.300 Masiero 2014ApJ...791..121M NEATM 5.29 0.066 0.066 Masiero 2011ApJ...741...68M NEATM 6.16 1.510 1.510 Nugent 2016AJ....152...63N NEATM 6.41 1.290 1.290 Nugent 2016AJ....152...63N NEATM