Figure 4

Figure 4: Required accuracy on weff = − 1 to obtain strong evidence against a model where − 1 − Δ − ≤ we ff ≤ − 1 + Δ+ as compared to a cosmological constant model, w = − 1. For a given σ, models to the right and above the contour are disfavored with odds of more than 20:1.