Derived protostellar mass (top), angular momentum (second row), specific angular momentum (third row), and rotation period (bottom) for the non-turbulent (left) and turbulent simulations (right). The shaded regions are estimated upper and lower bounds of the quantity based on the resolution study, using accretion fractions summarised in Table 2. The solid lines are the means of the upper and lower bounds. The horizontal black line at 2 days highlights the boundary between fast rotators and non-fast rotators (Kounkel et al. 2023).