value unc_up unc_lo author ref method 0.060 0.0500 0.0500 Nugent 2016AJ....152...63N NEATM 0.065 0.0090 0.0090 Masiero 2012ApJ...759L...8M NEATM 0.240 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM 0.251 0.0331 0.0331 Masiero 2011ApJ...741...68M NEATM