value	unc_up	unc_lo	author	ref	method
6.79	2.250	2.250	Nugent	2016AJ....152...63N	NEATM
6.82	2.510	2.510	Masiero	2021PSJ.....2..162M	NEATM
7.34	2.210	2.210	Masiero	2012ApJ...759L...8M	NEATM