value	unc_up	unc_lo	author	ref	method
2.58	0.300	0.300	Nugent	2016AJ....152...63N	NEATM
3.96	1.132	1.132	Masiero	2017AJ....154..168M	NEATM
4.17	1.090	1.090	Masiero	2020PSJ.....1....5M	NEATM
4.40	0.131	0.131	Masiero	2011ApJ...741...68M	NEATM