Extended Data Figure 4: Combining pipe and duct data.
Pipe and duct flow are plotted together using different axes. The data are plotted so that the two points (R0, C0) and (R1, C1) align for each data set; for example, (R1, C1) = (2,250, 0.92) for pipe flow is aligned with (R1, C1) = (2,030, 0.90) for duct flow, bringing into alignment the onset of weak fronts.
