value	unc_up	unc_lo	author	ref	method
2.78	0.690	0.690	Nugent	2016AJ....152...63N	NEATM
2.94	0.376	0.376	Masiero	2011ApJ...741...68M	NEATM
3.02	0.370	0.370	Masiero	2012ApJ...759L...8M	NEATM