value	unc_up	unc_lo	author	ref	method
12.32	2.890	2.890	Nugent	2016AJ....152...63N	NEATM
17.54	0.127	0.127	Masiero	2011ApJ...741...68M	NEATM
20.35	8.290	8.290	Masiero	2012ApJ...759L...8M	NEATM