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Density of ratios of population size during the bottleneck (500 ypb for calibrated analysis, 2.5 × 10−5 subs. per site for uncalibrated analysis) to size before bottleneck (4000 ypb for calibrated analysis, 1.5 × 10−4 subs. per site for uncalibrated analysis). Shaded regions indicate 95% highest posterior density (HPD) intervals.
