value	unc_up	unc_lo	author	ref	method
4.74	1.200	1.200	Nugent	2016AJ....152...63N	NEATM
5.45	1.640	1.640	Masiero	2021PSJ.....2..162M	NEATM
6.22	1.440	1.440	Masiero	2012ApJ...759L...8M	NEATM