value	unc_up	unc_lo	author	ref	method
1.0400e+19	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
1.3400e+19	3.6900e+18	3.6900e+18	Fienga	2011CeMDA.111..363F	Ephem
1.7400e+18	8.3100e+18	8.3100e+18	Zielenbach	2011AJ....142..120Z	Deflec
2.8966e+18	1.1906e+18	1.1906e+18	Fienga	INPOP19a	Ephem
3.5000e+17	4.6900e+18	4.6900e+18	Zielenbach	2011AJ....142..120Z	Deflec