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. 2022 Sep 5;12:15073. doi: 10.1038/s41598-022-18518-9

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$R^{2}$ scores (a and c) and MAPE (b and d) of the Wave Model with increasing fitting window forecasts (a and b) and the Linear Regression with sliding 2-week fitting window (c and d) for each WWTP and prediction date. Note that good performance is related to a yellow colour in the $R^{2}$ heatmaps (high correlation) and a blue colour in the MAPE heatmap (low error).