value	unc_up	unc_lo	author	ref	method
1.1800e+18	7.6500e+18	7.6500e+18	Zielenbach	2011AJ....142..120Z	Deflec
1.3872e+18	6.8736e+17	6.8736e+17	Fienga	INPOP19a	Ephem
2.2900e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
3.1600e+18	1.9500e+18	1.9500e+18	Zielenbach	2011AJ....142..120Z	Deflec
3.2700e+18	1.9400e+18	1.9400e+18	Zielenbach	2011AJ....142..120Z	Deflec