value	unc_up	unc_lo	author	ref	method
4.36	1.290	1.290	Nugent	2016AJ....152...63N	NEATM
4.65	1.370	1.370	Masiero	2021PSJ.....2..162M	NEATM
7.21	0.250	0.250	Masiero	2012ApJ...759L...8M	NEATM