value	unc_up	unc_lo	author	ref	method
2.1700e+19	1.3500e+19	1.3500e+19	Bange	1997ESASP.402..169B	Deflec
2.2100e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
5.7500e+18	1.2300e+18	1.2300e+18	Fienga	2011CeMDA.111..363F	Ephem
7.0094e+18	1.4715e+18	1.4715e+18	Fienga	2013arXiv1301.1510F	Ephem
9.1192e+17	4.2188e+17	4.2188e+17	Fienga	INPOP19a	Ephem