value	unc_up	unc_lo	author	ref	method
17.12	4.670	4.670	Nugent	2016AJ....152...63N	NEATM
18.44	0.400	0.400	Masiero	2012ApJ...759L...8M	NEATM
18.88	0.130	0.130	Masiero	2014ApJ...791..121M	NEATM
19.74	0.187	0.187	Masiero	2011ApJ...741...68M	NEATM