Comparison of the 1D surface density profile (solid black line) of the Σ₀ = 10 g cm^‒2 and log₁₀(L_x∕erg s^‒1) = 29.54 primordial (top panels) and transition disc (bottom panels) with the radial distribution of thetorques per unit disc mass determined from FARGO (blue) and the impulse approximation (orange). The torques were normalised with the normalisation factor (cf. Eq. (11)). The dotted line shows the planet location at the given timestep, while the shaded area encompassesa ± x_s.