value	unc_up	unc_lo	author	ref	method
6.82	1.650	1.650	Masiero	2020PSJ.....1....5M	NEATM
6.97	1.900	1.900	Masiero	2021PSJ.....2..162M	NEATM
7.29	1.904	1.904	Masiero	2017AJ....154..168M	NEATM
8.09	0.109	0.109	Masiero	2011ApJ...741...68M	NEATM