value unc_up unc_lo author ref method 0.180 0.1200 0.1200 Nugent 2016AJ....152...63N NEATM 0.209 0.0520 0.0520 Masiero 2012ApJ...759L...8M NEATM 0.280 0.1100 0.1100 Nugent 2016AJ....152...63N NEATM