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Sample data collection for excurrent fraction of O2 (FeO2) by the Sable system. FeO2 is sampled by two separate channels (top and middle ). Alternately, each channel is baselined, i.e., switches to measure the incurrent fraction of O2 (FiO2). The two channels are stitched together (bottom), resulting in an uninterrupted excurrent measurement. Drift correction occurs during data processing, as described in the text.
