Resolution:
## Figure 9.
Contraction time and vorticity statistics. (a) Probability distribution of contraction times on log-linear axes for P/P_{0 }= 0.024, k_{A}/k_{D }= 35 and k_{M}τ_{b }= 7.5 × 10^{-3}. The thick line gives the best fit to an exponential distribution which has a mean
≈ 1.7 × 10^{4}, corresponding to ≈ 0.75 full rotations (the longest vortex survived for ≈ 2.6 rotations).
Data corresponds to 20 independent runs. (b) Normalised probability histogram of signed
vorticity for P/P_{0 }= 0.020 (white bars in the background; 5 runs) and P/P_{0 }= 0.024 (shaded bars in the foreground; 20 runs).
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