Phaseograms showing pulse proflies in 0.3–2 keV for individual data groups listed in Table C.2 folded using Johnston & Kerr (2018) (left) and the updated ephemeris (middle) obtained in this work. The phase residuals to the best-fit solution (black symbols with error bars) and for the Johnston & Kerr (2018) solution (red, zerophase corresponds to the phase of the radio peak, and errors are omitted for clarity) are also shown in the right panel.