value	unc_up	unc_lo	author	ref	method
2.73	0.730	0.730	Nugent	2016AJ....152...63N	NEATM
2.87	0.420	0.420	Masiero	2012ApJ...759L...8M	NEATM
3.47	1.130	1.130	Masiero	2021PSJ.....2..162M	NEATM