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Results of the DNB analysis using peak-filtering Raman shifts. (a) A dendrogram produced by the hierarchical clustering of 10 Raman shifts fluctuating at 6 h, the time evolution of (b) the DNB score overplotted with the average discriminant score, (c) the average standard deviation and (d) the average correlation strength among DNB candidates, (e) topological structures of the weighted correlation network, and (f) correlation coefficients between the four DNB Raman shifts.
