value	unc_up	unc_lo	author	ref	method
3.85	0.680	0.680	Nugent	2016AJ....152...63N	NEATM
4.37	0.180	0.180	Masiero	2012ApJ...759L...8M	NEATM
4.73	0.135	0.135	Masiero	2011ApJ...741...68M	NEATM