value unc_up unc_lo author ref method 0.180 0.1300 0.1300 Nugent 2016AJ....152...63N NEATM 0.201 0.0531 0.0531 Masiero 2011ApJ...741...68M NEATM 0.232 0.0250 0.0250 Masiero 2012ApJ...759L...8M NEATM 0.240 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM