Images . Figure 1 . Covariance error ellipses for the proton radius rp and the Rydberg constant R∞ from the 2014 (blue marker and curve) and the current 2018 (red marker and curve) CODATA adjustment. The black marker and ellipses correspond to a 2018 adjustment where the experimental data from muonic hydrogen and muonic deuterium have not been included. Solid and dashed curves correspond to the one- and two-standard-uncertainty ellipses, respectively. Thex-...