Results of our numerical experiments. The time series correspond to the models listed in Table 1. Different line styles indicate different M_disk/M_⋆, and different line colors indicate analytic approximation, different N_s, or numerical setups. The first two rows correspond to dependencies on time (upper left), mass (upper right), N_s (middle left), and numerical setup (middle right). The third row shows energy (left) and angular momentum (right) errors.