Two-dimensional marginalised likelihood (over the parameter β) of the model parameters for the simulated bands at 40 deg (top) and 60 deg (bottom). Solid, dashed and dotted red lines show the 1σ, 2σ and 3σ confidence regions, respectively. The input parameters of the simulation are shown with a light blue cross. The maximum and the expected value of the two-dimensional pdf are indicated with a orange cross and asterisk, respectively. The orange triangle is the maximum of the one-dimensional marginalised pdf’s.