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. 2023 Apr 7;881:163292. doi: 10.1016/j.scitotenv.2023.163292

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Fig. 3 — Application of the N200 assay to monitor the relative abundance (%) of the mutations R203M (black circles- presumed Delta) or R203K + G204R (grey squares – presumed Omicron) in municipal wastewater influent. Influent was collected from the Region of Peel (A, B), York Region (C, D) and Waterloo Region (E, F) using composite (A–B, D–F) and grab (C) sampling. Lines drawn spline smoothed curve calculated using GraphPad PRISM (v 9.5.0).