value unc_up unc_lo author ref method 10.36 2.620 2.620 Masiero 2012ApJ...759L...8M NEATM 7.09 1.670 1.670 Nugent 2016AJ....152...63N NEATM 8.72 2.480 2.480 Nugent 2016AJ....152...63N NEATM