L²-norm of the time-domain synthesis signal (dark blue line) for control scenario number one, a ramp of the blowing pressure parameter γ from 0 to 2 and down, overlaid with the bifurcation diagram of Figure 3 (thick stable solutions and thin unstable solutions, of the first register in green and second register in red). Solid dark blue line indicates the first part of the signal (increasing γ) and dashed dark blue line the second (decreasing γ).