Mass in H₂ per density bin. Comparison between the standard resolution simulations (levels 8−10, in blue) and the high-resolution simulations (levels 9−11, dashed) at a time of 10 and 15 Myr. From top to bottom: density bins n ∈ (0.1,1), (1,10), (10,100), (100,1000), (1000,10 000) [ cm^-3 ]. The differences between the two remain fairly limited, showing that numerical convergence is not a great problem.