Combining Stage 1 and 2 matches provides a reasonable high (but not upper) bound on the fraction of plumes matched to known emission events: 46% [38% to 52%] of plumes, and 48% [35% to 62%] of emissions, on production facilities. It is reasonable to assume that, had operational and event data been available for non-partner production, a similar fraction of plumes could be matched to events.