value unc_up unc_lo author ref method 0.250 0.0900 0.0900 Nugent 2016AJ....152...63N NEATM 0.299 0.0510 0.0510 Masiero 2012ApJ...759L...8M NEATM 0.372 0.0671 0.0671 Masiero 2011ApJ...741...68M NEATM 0.460 0.0800 0.0800 Masiero 2014ApJ...791..121M NEATM