Table 3.
Statistical comparison among the infiltrate metal concentrations in three permeable pavement types (PICP, PC, PA), surface runoff (CC) and rainwater (RW) by Kruskal Wallis test (uncensored data) or Wilcoxon score test (censored data).
| Total | Dissolved | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statistics | PICP | PA | PC | CC | RW | Statistics | PICP | PA | PC | CC | RW | |
| Al | Chisq (4, 848) = 552, p-value < 0.001 | E | D | B | C | A | Chisq (4, 636) = 811, p-value < 0.001 | C | D | BC | B | A |
| As | Chisq (4, 848) = 5.5, p-value = 0.244 | A | A | A | A | A | Chisq (4, 636) = 8.5, p-value = 0.075 | A | A | A | A | A |
| Ba | Chisq (4, 848) = 178, p-value < 0.001 | B | C | A | A | A | Chisq (4, 636) = 253, p-value < 0.001 | AB | C | B | A | AB |
| Ca | Chisq (4, 848) = 522, p-value < 0.001 | C | D | B | B | A | Chisq (4, 636) = 327, p-value < 0.001 | C | D | BC | B | A |
| Cd | Chisq (4, 848) = 9, p-value = 0.062 | A | A | A | A | A | Chisq (4, 636) = 8.5, p-value = 0.075 | A | A | A | A | A |
| Cr | Chisq (4, 848) = 71.2, p-value < 0.001 | D | B | C | A | A | Chisq (4, 636) = 39.9, p-value < 0.001 | B | C | BC | A | A |
| Cu | Chisq (4, 848) = 233, p-value < 0.001 | C | A | A | B | A | Chisq (4, 636) = 18.9, p-value < 0.001 | AB | BC | A | BC | C |
| Fe | Chisq (4, 848) = 956, p-value < 0.001 | E | B | C | D | A | Chisq (4, 636) = 86.7, p-value < 0.001 | C | A | B | B | A |
| K | Chisq (4, 847) = 468, p-value < 0.001 | C | D | E | B | A | Chisq (4, 635) = 414, p-value < 0.001 | C | D | E | B | A |
| Li | Chisq (4, 848) = 47.1, p-value < 0.001 | C | B | C | A | A | Chisq (4, 636) = 21.6, p-value < 0.001 | B | B | B | A | A |
| Mg | Chisq (4, 848) = 905, p-value < 0.001 | C | A | B | B | A | Chisq (4, 636) = 280, p-value < 0.001 | C | A | D | C | B |
| Mn | Chisq (4, 848) = 520, p-value < 0.001 | D | A | B | C | B | Chisq (4, 636) = 24.9, p-value < 0.001 | AB | A | AB | C | BC |
| Na | Chisq (4, 848) = 256, p-value < 0.001 | D | C | E | B | A | Chisq (4, 636) = 217, p-value < 0.001 | D | C | E | B | A |
| Ni | Chisq (4, 848) = 173, p-value < 0.001 | C | A | A | B | A | Chisq (4, 636) = 37.1, p-value < 0.001 | A | AB | A | C | BC |
| Pb | Chisq (4, 848) = 0.7, p-value = 0.945 | A | A | A | A | A | Chisq (4, 636) = 7.1, p-value = 0.129 | A | A | A | A | A |
| Sb | Chisq (4, 848) = 1.8, p-value = 0.777 | A | A | A | A | A | Chisq (4, 636) = 10.4, p-value = 0.034 | AB | B | A | A | AB |
| Si | Chisq (4, 848) = 297, p-value < 0.001 | D | C | D | B | A | Chisq (4, 636) = 266, p-value < 0.001 | C | C | D | B | A |
| Sn | Chisq (4, 848) = 7.2, p-value = 0.124 | A | A | A | A | A | Chisq (4, 636) = 2.6, p-value = 0.628 | A | A | A | A | A |
| Sr | Chisq (4, 848) = 653, p-value < 0.001 | C | D | C | B | A | Chisq (4, 636) = 577, p-value < 0.001 | C | E | D | B | A |
| V | Chisq (4, 848) = 193, p-value < 0.001 | D | C | D | B | A | Chisq (4, 636) = 138, p-value < 0.001 | D | C | D | B | A |
| Zn | Chisq (4, 848) = 138, p-value < 0.001 | C | A | B | D | D | Chisq (4, 636) = 252, p-value < 0.001 | A | AB | B | C | D |
Note.
1.
“A, B, C …” indicates statistical groups. A < B < C < D < E.
2.
Red indicates p < 0.05, and blue indicates no statistical difference among the five sources.