Relative contribution of statistical measurement uncertainty (grey band, representing the 1σ uncertainty on for the plotted bins) and the systematic errors we assign due to uncertainty in the N⁽¹⁾ bias correction, point-source shot-noise correction, and the beam transfer function. The contributions represent error eigenmodes in , and so are completely correlated between L. Note that these contributions are much smaller than our measurement uncertainty, and they have been multiplied by a factor of 10 for clarity.