Site

Point Sources

Mobile Sources

Area Sources

Houston Downtown

21.45% ± 7.37%

20.60% ± 6.89%

5.21% ± 1.59%

Houston Ship Channel

27.51% ± 3.53%

18.27% ± 2.22%

4.19% ± 1.65%

Galveston

30.30% ± 9.31%

18.61% ± 7.43%

3.72% ± 1.52%