Shear rates q measured locally in the simulations as a function of N/Ω_o. The different colours represent distinct methods to measure q: slope in the rotation profile between 3.2 and 4 km (pink), q at the maximum of $B_{\varphi }^{m=0}$ and B_θ (green and orange, respectively), and slope in the range of radii where half of the Tayler mode energy (approximated by the latitudinal magnetic energy E_Bθ) is concentrated around its maximum (red).