value	unc_up	unc_lo	author	ref	method
6.00	1.700	1.700	Masiero	2017AJ....154..168M	NEATM
6.60	2.030	2.030	Masiero	2021PSJ.....2..162M	NEATM
6.84	0.380	0.380	Masiero	2011ApJ...741...68M	NEATM
7.19	1.210	1.210	Masiero	2012ApJ...759L...8M	NEATM