Results of a power law fit, y = A × (10^{x − x₀})^B, to all the different mass, redshift bins present in Fig. 19. The left panel plots the normalisation (A * 10³) as the y-intercept at x = x₀ = −3.25; the right panel plots the slope (B). The slope is consistently around −1.5 for all M_* values (red dashed line). The normalisations show a slight mass dependence of the incidence, with some redshift evolution. Light grey and black dashed lines show the result from a linear fit (parameters listed in Table 3).