There is a high degree of variability in near real time localization estimates, but broad agreement when aggregated at the month-scale (or longer). Specifically, alignment in time ranges from 14.4% to 25.6% across sites (average = 19.6%), while alignment in distribution ranges from 41.3% to 83.6% across sites (average = 65.3%). This has important practical implications for alerting, namely that individual localization estimates may not be reliable and longer time aggregates should be utilized. For example, a rolling mode could be used to inform leak mitigation activities, where the most common source over a, e.g., four hour window could be used to identify leak sources rather than individual 30-minute estimates.