value	unc_up	unc_lo	author	ref	method
5.32	1.420	1.420	Nugent	2016AJ....152...63N	NEATM
5.46	1.322	1.322	Masiero	2017AJ....154..168M	NEATM
6.23	2.020	2.020	Masiero	2012ApJ...759L...8M	NEATM
6.37	0.189	0.189	Masiero	2011ApJ...741...68M	NEATM