highly significantp < 0.001
2 C) showed a highly significant decreasing trend (Wilcoxon rank-sum test, p < 0.001) in samples of 2022, and the proportion of windows with positive values significantly decreased.
2 C) showed a highly significant decreasing trend (Wilcoxon rank-sum test, p < 0.001) in samples of 2022, and the proportion of windows with positive values significantly decreased.