value	unc_up	unc_lo	author	ref	method
4.29	1.330	1.330	Nugent	2016AJ....152...63N	NEATM
4.50	1.070	1.070	Masiero	2020PSJ.....1....5M	NEATM
4.59	1.680	1.680	Masiero	2012ApJ...759L...8M	NEATM