value	unc_up	unc_lo	author	ref	method
12.28	3.440	3.440	Nugent	2016AJ....152...63N	NEATM
13.60	0.126	0.126	Masiero	2011ApJ...741...68M	NEATM
18.26	5.450	5.450	Masiero	2021PSJ.....2..162M	NEATM