Log-likelihood values that fall below the dashed line are outside the approximate
95% CI of the maximum likelihood estimate. The dark, solid circled point has the
highest log-likelihood, and therefore corresponds to the maximum likelihood
estimate for the reporting efficiency, 0.152. The two light, dashed circled
points correspond to the most extreme reporting probabilities that have
likelihoods within the confidence bounds, and the arrow at the bottom shows the
CI for reporting efficiency, 0.147–0.161.