value	unc_up	unc_lo	author	ref	method
0.040	0.0300	0.0300	Nugent	2016AJ....152...63N	NEATM
0.057	0.0130	0.0130	Masiero	2012ApJ...759L...8M	NEATM
0.086	0.0380	0.0670	Masiero	2021PSJ.....2..162M	NEATM