value	unc_up	unc_lo	author	ref	method
5.64	2.340	2.340	Nugent	2016AJ....152...63N	NEATM
6.17	0.180	0.180	Masiero	2012ApJ...759L...8M	NEATM
8.92	0.057	0.057	Masiero	2011ApJ...741...68M	NEATM