Significance test for the coefficients of variation (CVs) for different groups of metabolites, or products, or substrates across the considered environmental conditions.

Given are Wilcoxon-test -values from testing for significantly lower CVs for metabolites or products or substrates in the given six comparisons, respectively. A denotes that the sample size was too small for a statistic test (0 or 1 product in the respective group). The table entries in bold mark the significant comparisons at level 0.05.