value	unc_up	unc_lo	author	ref	method
1.1800e+19	1.0100e+19	1.0100e+19	Zielenbach	2011AJ....142..120Z	Deflec
1.2700e+19	9.5700e+18	9.5700e+18	Zielenbach	2011AJ....142..120Z	Deflec
4.4600e+17	1.4000e+19	1.4000e+19	Zielenbach	2011AJ....142..120Z	Deflec
5.4961e+18	2.1641e+18	2.1641e+18	Fienga	INPOP19a	Ephem
5.5700e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem