Planck 2018 results. VI. Cosmological parameters
This paper presents the cosmological parameter constraints from the final (2018) Planck satellite analysis of cosmic microwave background temperature and polarization anisotropies plus lensing. The data are well fit by a six-parameter flat Lambda-CDM model, yielding precise values for the matter density, baryon density, and other parameters. The inferred Hubble constant from the CMB is in tension with local distance-ladder measurements.