value	unc_up	unc_lo	author	ref	method
2.2100e+18	5.1600e+17	5.1600e+17	Fienga	2014arXiv1405.0484F	Ephem
3.2014e+17	4.9711e+17	4.9711e+17	Fienga	2013arXiv1301.1510F	Ephem
3.4687e+17	1.6742e+17	1.6742e+17	Fienga	INPOP19a	Ephem
7.2800e+17	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem