value	unc_up	unc_lo	author	ref	method
3.84	1.060	1.060	Nugent	2016AJ....152...63N	NEATM
3.86	0.132	0.132	Masiero	2011ApJ...741...68M	NEATM
4.01	1.380	1.380	Masiero	2021PSJ.....2..162M	NEATM