The CMS vendors provide quantification estimates at either a 15-minute frequency (solutions A and B) or a 1-minute frequency (solution C). Therefore, to compare individual rate estimates between CMS solutions, we must average the vendor-provided rate estimates onto the same temporal frequency. Failing to do so would result in a comparison of rate estimates that were based on different time periods, and hence emission intermittency would introduce additional variability between the CMS solutions. To better align with the rate estimates from the DLQ algorithm, we average the vendor-provided rate estimates up to a 30-minute frequency.