value unc_up unc_lo author ref method 4.70 0.230 0.230 Masiero 2012ApJ...759L...8M NEATM 4.73 0.630 0.630 Nugent 2016AJ....152...63N NEATM 5.69 0.110 0.110 Masiero 2011ApJ...741...68M NEATM