value	unc_up	unc_lo	author	ref	method
1.3677e+18	6.7695e+17	6.7695e+17	Fienga	INPOP19a	Ephem
2.5500e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
2.8000e+19	1.3700e+19	1.3700e+19	Zielenbach	2011AJ....142..120Z	Deflec
6.8800e+18	1.3900e+19	1.3900e+19	Zielenbach	2011AJ....142..120Z	Deflec
7.7500e+18	3.4300e+18	3.4300e+18	Zielenbach	2011AJ....142..120Z	Deflec
8.2100e+18	3.4100e+18	3.4100e+18	Zielenbach	2011AJ....142..120Z	Deflec