Fig. 3From: Long-term variability in sugarcane bagasse feedstock compositional methods: sources and magnitude of analytical variabilityControl charts of compositional data for the long-term individually extracted biomass dataset (individually extracted NIST RM 8491 sugarcane bagasse composition) plotted chronologically. This set was analyzed along with feedstock samples. The central green line denotes the average value, while the dashed red lines show two times the standard deviation and solid red lines show three times the standard deviationBack to article page