Time evolution of the black hole mass (left), accretion rate onto the event horizon (middle), and black hole spin (right) for the rotation normalised with specific angular momentum at ISCO S = 1.0 and S = 2.0 (models are labelled in the middle panel with symbols referring to Table A.1). The initial spin of the black hole was A₀ = 0.85, and the initially vertical magnetic field given by Eq. (17) was normalised with β = 10 or β = 100 at the ISCO radius.