value	unc_up	unc_lo	author	ref	method
0.270	0.1000	0.1000	Nugent	2016AJ....152...63N	NEATM
0.281	0.2410	0.2410	Masiero	2012ApJ...759L...8M	NEATM
0.304	0.0581	0.0581	Masiero	2011ApJ...741...68M	NEATM