Fig. 4: Relationships between gas concentrations.
From: Seasonality of methane and carbon dioxide emissions in tropical seagrass and unvegetated ecosystems

A, C, E Correlations between daily mean concentrations (x̄[-]) of O2 (mg L−1), CH4 (nmol kg−1), and CO2 (µmol kg−1) in the three ecosystems. B, D, E Correlations between daily amplitudes concentrations (δ[-]) of O2, CH4, and CO2.