we tested our data for normality by applying Kolmogorov-Smirnov tests [7]. For all samples, the p-value was lower than 0.05 showing that the data is not normally distributed. We also graphically examined how well our data fits the normal distribution using Q-Q plots. Since the data is not normally distributed, we applied non-parametric statistical tests: Kruskal-Wallis analysis of variance [8] for testing whether the samples come from the same distribution, followed by a post-hoc non-parametric Mann-Whitney U (MWW) test [9] for conducting pairwise comparisons. All our reported results including Figures and Tables are statistically significant with the level of significance defined as p-value ≤ 0.05.