value	unc_up	unc_lo	author	ref	method
1.7800e+10	2.1000e+09	2.1000e+09	Naidu	2015AJ....150...54N	BinRad
4.6000e+11	5.0000e+10	5.0000e+10	Margot	2002Sci...296.1445M	BinRad