Table 4 Metrics of categorized pH levels and multiple comparisons of p-values under Kruskal-Wallis test (H2, 102 = 78, P = 0.001). Significant differences after multiple comparisons of p values are denoted as *.
Factor | Level | N | Mean | Std. Dev. | Median | p-values 2-tailed |
|---|---|---|---|---|---|---|
pH | 2300 | 36 | 7.53 | 0.13 | 7.60 | * |
2100 | 36 | 7.79 | 0.15 | 8.02 | * | |
This study | 30 | 7.99 | 0.06 | 7.80 | * |