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Model-adjusted hourly concentration means of different deployed SPEC DGS-O3 using multiple linear regression vs. hourly concentration means of reference measurements given by the AEMS for ambient O3 in ppb. The RMSE is in ppb. For smoothing the hourly concentration means, a rolling 24 h average is used: (Top) SPEC DGS-O3 deployed in AELCM003; (Middle) SPEC DGS-O3 deployed in AELCM004; and (Bottom) SPEC DGS-O3 deployed in AELCM005.
