value unc_up unc_lo author ref method 20.05 4.010 4.010 Ali-Lagoa 2018A&A...612A..85A NEATM 20.13 0.269 0.269 Masiero 2011ApJ...741...68M NEATM 20.70 0.620 0.620 Usui 2011PASJ...63.1117U NEATM 21.31 4.260 4.260 Ali-Lagoa 2018A&A...612A..85A NEATM 21.58 0.660 0.660 Masiero 2012ApJ...759L...8M NEATM