value	unc_up	unc_lo	author	ref	method
2.83	0.690	0.690	Nugent	2016AJ....152...63N	NEATM
3.19	0.945	0.945	Masiero	2011ApJ...741...68M	NEATM
3.22	0.340	0.340	Masiero	2012ApJ...759L...8M	NEATM