MOESM4 of Effects of H2:CO2 ratio and H2 supply fluctuation on methane content and microbial community composition during in-situ biological biogas upgrading

Additional file 4. Scatterplot matrices. Multipage PDF format file of pairwise scatterplots of bioprocess variables. The legend at the top of each page indicates the colouring of datapoints by phase of reactor operation or H2 supplementation (i.e. control vs. H2-supplemented). There are two plots for each colouring because some variables were not measured across all samples, and the two matrices with the lesser number of variables include all samples