value unc_up unc_lo author ref method 7.48 0.210 0.210 Masiero 2012ApJ...759L...8M NEATM 8.00 0.620 0.620 Usui 2011PASJ...63.1117U NEATM 8.52 1.700 1.700 Ali-Lagoa 2018A&A...612A..85A NEATM 8.60 1.720 1.720 Ali-Lagoa 2018A&A...612A..85A NEATM