Shadded regions bounded by the two estimates and for different bin sizes Δη at four values of η₀ = −1.1, 0.7, 1.1, 1.6 from light to dark blue respectively. For clarity the values of the estimates for η₀ = −1.1 and η₀ = 0.7 were multiplied by 15 and 1.5 to shift their curves upward. Red dash-dotted lines indicate a scaling ∝ (Δη)^1/2. At positive density contrasts ŋ > 0 the estimates follow a scaling close to the predicted .