Single layer configuration and model. Particular values in reference to the “double-tanh” model (35): h₁(∞) = 2.4, h₁( − ∞) = 3.77 with Δ = 0.75 and φ = ξ = 0.1, q = 1.5. The top panel shows the corresponding mean height h₁. The middle panel depicts the fundamental PV profile together with descriptive annotations relating various features of the profile to the parameters describing it in the text. The bottom panel shows the deviation from the Keplerian flow .