Scatter plot showing the results from Table 1. The knot timescale is on the x-axis and the characteristic timescale on the y-axis. The coloured error bars are based on the 90% characteristic timescale confidence regions associated with the best-fit slope β obtained from the best bending power-law fit. The grey error bars are the confidence regions of the timescale when the slope is allowed to vary. For each source, except 2230+114, the knot timescale and characteristic timescale associated with the fixed best-fit slope β are consistent within uncertainties given the sparse parameter grid.