value unc_up unc_lo author ref method 4.47 0.229 0.229 Masiero 2011ApJ...741...68M NEATM 4.54 0.890 0.890 Nugent 2016AJ....152...63N NEATM 4.72 0.100 0.100 Masiero 2012ApJ...759L...8M NEATM