value unc_up unc_lo author ref method 0.290 0.1700 0.1700 Nugent 2016AJ....152...63N NEATM 0.317 0.0409 0.0409 Masiero 2011ApJ...741...68M NEATM 0.410 0.1800 0.1800 Masiero 2012ApJ...759L...8M NEATM