value	unc_up	unc_lo	author	ref	method
1.9597e+18	9.0146e+17	9.0146e+17	Fienga	INPOP19a	Ephem
1.9800e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
2.8872e+18	1.2130e+18	1.2130e+18	Fienga	2013arXiv1301.1510F	Ephem
3.6800e+18	1.5100e+18	1.5100e+18	Fienga	2011CeMDA.111..363F	Ephem