Comparison of production cluster measurements with inventory. A comparison between measured and inventory emissions estimates is shown in panel A, along with the 1:1 unit ratio line. A binary comparison (yes or no estimated emissions) is shown in panel B. The site count for each type of match is written, and the color scale is propagated to the other graphs. Panel C shows a rough map of Groningen production clusters. Those sites with inventory emissions < 0.1 kg hr–1 for August are outlined in yellow. These results cover the eastern-most portion of the study region shown in Figure 1, with its border drawn in blue here. DOI: https://doi.org/10.1525/elementa.308.f3