Meridional sections of the isodensity, equipotential, isovelocity, and isobaric surfaces (from top row to bottom row) for a sequence of four differentially rotating models characterized by Ψ = 2, , and χ = 0.04,0.16,0.36,1.0 (from left column to right column; note the change in the scale of the axes). The first and second models are in the moderate rotation regime, the third has rapid rotation, and the last represents the beginning of the extreme rotation regime.