value unc_up unc_lo author ref method 6.40 1.170 1.170 Nugent 2016AJ....152...63N NEATM 6.57 1.590 1.590 Nugent 2016AJ....152...63N NEATM 7.88 0.700 0.700 Usui 2011PASJ...63.1117U NEATM 8.23 1.650 1.650 Ali-Lagoa 2018A&A...612A..85A NEATM