value	unc_up	unc_lo	author	ref	method
2.3800e+18	5.7400e+18	5.7400e+18	Zielenbach	2011AJ....142..120Z	Deflec
2.9892e+18	1.3907e+18	1.3907e+18	Fienga	INPOP19a	Ephem
3.6000e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
6.0200e+18	7.8200e+18	7.8200e+18	Zielenbach	2011AJ....142..120Z	Deflec