We now consider quantification performance. Figure shows a parity plot of the true and estimated emission rates, with the true rate plotted on the horizontal axis and the corresponding estimate on the vertical axis. Ordinary least squares is used to fit a line to all of the correctly identified events (i.e., true positives only), Points along the vertical solid gray line are false positives, and points along the horizontal solid gray line are false negatives. Points along the horizontal dotdashed gray line are emission events that were identified but were not deemed suitable for quantification. The magenta line shows the linear model fit to all correctly identified events (i.e., true positives only) using ordinary least squares and a zero intercept. One estimate of 12.1 kg/hr corresponding to a controlled release of 4.9 kg/hr is excluded for visual clarity. Uncertainty in the METEC emission rates is a 95% confidence interval provided by METEC. The right panel zooms in on data shown in the left panel. The magenta line in the right panel is the same best fit line as shown in the left panel.