value	unc_up	unc_lo	author	ref	method
20.82	5.760	5.760	Nugent	2016AJ....152...63N	NEATM
24.74	2.100	2.100	Tedesco	2002AJ....123.1056T	STM
27.10	12.190	12.190	Masiero	2017AJ....154..168M	NEATM
27.49	0.160	0.160	Masiero	2014ApJ...791..121M	NEATM
28.70	0.480	0.480	Masiero	2012ApJ...759L...8M	NEATM
29.74	0.204	0.204	Masiero	2011ApJ...741...68M	NEATM