Fig. 6From: Ecotoxicological assessment of cigarette butts on morphology and photosynthetic potential of Azolla pinnataA Principal Component Analysis (PCA) was conducted using chlorophyll fluorescence data for four different CBs treatment conditions. The PCA generated two dimensions (PC1 and PC2), with PC2 capturing the majority of the variance in the data. The Chlorophyll a fluorescence parameter was represented by arrows on the PC1 and PC2 dimensions. All calculated chlorophyll a fluorescence parameters. The correlations were represented with a color code.Back to article page