Measurement report: Method for evaluating CO2 emission from a cement plant by atmosphere O2/N2 and CO2 measurements and its applicability to the detection of CO2 capture signals - Ishidoya, S.; Tsuboi, K.; Kondo, H.; Ishijima, K.; Aoki, N.; Matsueda, H.; Saito, K. (Atmos. Chem. Phys. Discuss., 2022)