value	unc_up	unc_lo	author	ref	method
6.43	0.137	0.137	Masiero	2011ApJ...741...68M	NEATM
6.98	1.670	1.670	Masiero	2021PSJ.....2..162M	NEATM
7.16	2.030	2.030	Masiero	2020PSJ.....1....5M	NEATM
7.26	2.148	2.148	Masiero	2017AJ....154..168M	NEATM