value	unc_up	unc_lo	author	ref	method
31.45	0.440	0.440	Grav	2011ApJ...742...40G	NEATM
34.16	0.650	0.650	Grav	2012ApJ...759...49G	NEATM
42.16	4.000	4.000	Tedesco	2002AJ....123.1056T	STM