value	unc_up	unc_lo	author	ref	method
5.66	1.460	1.460	Nugent	2016AJ....152...63N	NEATM
6.19	0.054	0.054	Masiero	2011ApJ...741...68M	NEATM
6.60	2.250	2.250	Masiero	2021PSJ.....2..162M	NEATM