value	unc_up	unc_lo	author	ref	method
1.1414e+18	1.3919e+17	1.3919e+17	Fienga	2013arXiv1301.1510F	Ephem
1.1800e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
1.7883e+18	8.4561e+17	8.4561e+17	Fienga	INPOP19a	Ephem