value	unc_up	unc_lo	author	ref	method
12.06	3.571	3.571	Masiero	2017AJ....154..168M	NEATM
12.87	3.640	3.640	Masiero	2020PSJ.....1....5M	NEATM
15.65	0.264	0.264	Masiero	2011ApJ...741...68M	NEATM
17.81	1.200	1.200	Tedesco	2002AJ....123.1056T	STM