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. Author manuscript; available in PMC: 2023 Sep 1.
Published in final edited form as: Environ Int. 2022 Jul 27;167:107433. doi: 10.1016/j.envint.2022.107433

Table 2.

Distributions of total hydrocarbons and BTEX-H cumulative quantitative exposure estimates (N=19,018)a

Exposure (units) Mean SD Min 25th percentile 50th percentile 75th percentile Max
Total hydrocarbons, ppm-days 101.43 135.74 0.01 11.79 50.40 135.44 1243.76
Benzene, ppb-days 360.66 489.99 0.01 44.07 184.52 492.44 7744.08
Toluene, ppb-days 1271.01 1538.86 0.14 155.25 724.24 1886.73 18067.89
Ethylbenzene, ppb-days 276.23 367.81 0.005 37.43 152.69 380.84 8225.82
Xylenes, ppb-days 1748.60 1734.43 2.35 550.24 1240.47 2402.48 24413.06
n-Hexane, ppb-days 1214.47 3405.28 0.06 73.31 294.80 1167.89 62438.68
a

Cumulative quantitative exposure estimates were generated by summing over maximum daily exposure estimates (i.e. when individuals had multiple jobs/activities in a given day, the estimate for the exposure group with the highest estimated exposure)