value	unc_up	unc_lo	author	ref	method
7.89	2.550	2.550	Nugent	2016AJ....152...63N	NEATM
8.58	2.240	2.240	Masiero	2021PSJ.....2..162M	NEATM
8.90	2.300	2.300	Masiero	2012ApJ...759L...8M	NEATM