value	unc_up	unc_lo	author	ref	method
1.8600e+18	5.2000e+18	5.2000e+18	Zielenbach	2011AJ....142..120Z	Deflec
1.9600e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
2.1753e+18	1.0253e+18	1.0253e+18	Fienga	INPOP19a	Ephem
3.2500e+18	6.5000e+17	6.5000e+17	Fienga	2011CeMDA.111..363F	Ephem
3.7400e+18	5.3000e+18	5.3000e+18	Zielenbach	2011AJ....142..120Z	Deflec