For example, an average excursion of 1.2 kg/hr over a 90-day period (well-site action threshold) against a baseline of 0.3 kg/hr is qualitatively different from an average excursion of 1.6 kg/hr (compressor station action threshold) against a baseline of 10 kg/h. Recent research suggests that CMS may be more effective in the former scenario than in the latter. Poor agreement between CMS solutions on short time scales (i.e., 30 minutes) indicates that individual emission rate estimates near the 0.4 kg/hr detection threshold will likely have high variability. However, this study is poorly suited to assess the ability of CMS to meet the 0.4 kg/hr detection threshold, as we focused on the ability of CMS to localize and quantify emissions over their ability to detect emissions. Poor agreement on individual emission rates between CMS solutions does not necessarily mean that CMS cannot detect small emissions, just that the estimated emission rates will have high variability. Controlled release evaluations are necessary to assess the minimum detection limits of CMS, with recent studies indicating that some CMS solutions are approaching the 0.4 kg/hr threshold. Irrespective of the short-term agreement between CMS solutions, temporal aggregation over several hours to weeks is likely to provide actionable information to operators to identify and mitigate abnormal emission events compared to instantaneous concentration readings or short-term (e.g., 30-minute) quantification estimates.