value	unc_up	unc_lo	author	ref	method
0.220	0.1000	0.1000	Nugent	2016AJ....152...63N	NEATM
0.229	0.0495	0.0495	Masiero	2011ApJ...741...68M	NEATM
0.250	0.0400	0.0400	Masiero	2014ApJ...791..121M	NEATM