On large-scale, linear regressions suggest an increasing trend in TCC along the length of the hose for both top (R 2 = 0.36) and bottom (R 2 = 0.17).
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The sentences
On large-scale, ordination by non-metric multidimensional scaling, based on the Bray-Curtis dissimilarity, showed a clear trend in sample clustering in the control hose ( Supplementary Figure S4A ).