value	unc_up	unc_lo	author	ref	method
7.54	2.880	2.880	Nugent	2016AJ....152...63N	NEATM
7.56	0.192	0.192	Masiero	2011ApJ...741...68M	NEATM
8.17	3.310	3.310	Masiero	2021PSJ.....2..162M	NEATM
8.68	2.238	2.238	Masiero	2017AJ....154..168M	NEATM
9.00	2.570	2.570	Masiero	2021PSJ.....2..162M	NEATM