Timing parameters of J0742−2822 calculated in 100 d windows with consecutive windows overlapping by 50 TOAs; the time window is represented with a horizontal error bar. Top: Evolution of $\dot{\nu }$ with the glitch model subtracted (Eq. 2). Centre: Evolution of $\ddot{\nu }$ with the glitch model subtracted. Bottom: Evolution of Δ₇ calculated from ν and $\ddot{\nu }$ with the glitch model subtracted Sect. 5). The horizontal lines corresponds to the mean pre-glitch value of Δ₇ and the mean post-glitch value of Δ₇.