Rural areas | Urban areas | Z | p Value | |||
---|---|---|---|---|---|---|
N | Median (25%, 75%; μg/L) | N | Median (25%, 75%; μg/L) | |||
0– | 55 | 188.4 (106.5, 326.6) | 32 | 141.6 (102.3, 208.6) | −1.937 | 0.053 |
1– | 209 | 186.0 (117.5, 264.3) | 140 | 176.5 (91.2, 265.8) | −0.653 | 0.514 |
5– | 335 | 176.7 (116.0, 274.6) | 343 | 171.0 (112.2, 258.5) | −0.642 | 0.521 |
10– | 369 | 198.7 (123.8, 288.5) | 350 | 173.3 (108.1, 258.4) | −2.646 | 0.008 |
15– | 208 | 190.5 (108.5, 275.0) | 244 | 181.0 (102.4, 264.2) | −0.907 | 0.364 |
20– | 304 | 163.6 (104.4, 252.8) | 287 | 191.2 (111.0, 288.1) | −0.166 | 0.096 |
25– | 416 | 167.6 (98.1, 258.8) | 508 | 166.2 (99.0, 257.7) | −0.103 | 0.918 |
30– | 500 | 173.3 (101.8, 261.8) | 483 | 173.9 (108.2, 264.5) | −0.460 | 0.645 |
35– | 594 | 178.0 (110.2, 269.9) | 666 | 172.6 (105.3, 253.6) | −1.778 | 0.075 |
40– | 813 | 170.1 (105.0, 254.7) | 832 | 168.3 (104.8, 246.5) | −0.447 | 0.655 |
45– | 872 | 169.0 (106.5, 259.4) | 828 | 150.8 (90.5, 236.5) | −3.647 | 0.000 |
50– | 936 | 152.0 (96.0, 241.9) | 962 | 148.1 (85.6, 231.8) | −1.897 | 0.058 |
55– | 1049 | 151.3 (97.8, 240.0) | 1078 | 148.7 (87.3, 238.0) | −1.310 | 0.190 |
60– | 796 | 155.0 (95.8, 251.1) | 869 | 137.0 (81.5, 218.0) | −4.071 | 0.000 |
65– | 451 | 154.2 (91.5, 236.9) | 478 | 125.2 (72.8, 204.8) | −3.932 | 0.000 |
70– | 305 | 151.2 (91.5, 236.9) | 340 | 121.7 (73.9, 219.2) | −3.842 | 0.000 |
75– | 210 | 155.8 (92.1, 233.3) | 297 | 127.5 (76.4, 200.2) | −2.990 | 0.003 |
80– | 101 | 156.6 (103.3, 228.4) | 125 | 137.0 (73.8, 219.2) | −1.979 | 0.048 |
85– | 30 | 133.9 (76.3, 194.4) | 47 | 118.0 (70.1, 166.6) | −0.752 | 0.452 |
Total | 8553 | 170.1 (103.9, 259.8) | 8909 | 153.5 (92.0, 237.5) | −10.570 | 0.000 |