value unc_up unc_lo author ref method 0.290 0.1400 0.1400 Nugent 2016AJ....152...63N NEATM 0.324 0.0490 0.0490 Masiero 2012ApJ...759L...8M NEATM 0.339 0.0344 0.0344 Masiero 2011ApJ...741...68M NEATM