Simulated SZ mocks to be compared with the NIKA data (Figure 2). The smoothing kernel and the contours are the same as Figure 2. From left to right, we show a noiseless SZ realization, the same image with noise, the noiseless residual between the mock and the radial model, and the residual including noise. The first, second and third rows correspond to model 1, model 2 and model 3, respectively. See Table 1 for the definition of the models.