Distribution of the ratio of 8-h TWA personal breathing zone PM5 (µg/m3) estimates and 4-h measurement components to the paired ambient PM5 measurement for each date.
| Ratio of the median 8-h TWA estimate or AM/PM personal breathing zone measurement to ambient air concentration . | ||||||||
|---|---|---|---|---|---|---|---|---|
| Overall . | 22 February . | 22 March . | 22 December . | 23 February . | 23 April . | AM* . | PM* . | |
| N | 287 | 74 | 69 | 59 | 42 | 43 | 148 | 139 |
| Min | 0.14 | 1.31 | 1.88 | 2.05 | 0.76 | 0.14 | 0.12 | 0.13 |
| 10th | 1.51 | 1.54 | 2.70 | 2.32 | 0.84 | 0.16 | 1.30 | 1.11 |
| 25th | 2.32 | 1.93 | 4.16 | 2.58 | 1.10 | 2.10 | 1.91 | 2.02 |
| Mean | 4.15 | 3.07 | 6.97 | 3.49 | 2.34 | 4.15 | 4.44 | 4.30 |
| Median | 3.54 | 3.18 | 5.58 | 3.04 | 2.22 | 3.95 | 3.13 | 3.04 |
| 75th | 4.96 | 4.05 | 7.74 | 4.49 | 3.54 | 6.74 | 4.94 | 4.90 |
| 90th | 6.87 | 4.59 | 12.2 | 5.11 | 4.02 | 8.29 | 8.39 | 6.78 |
| Max | 33.6 | 5.73 | 33.6 | 6.83 | 5.41 | 10.2 | 37.5 | 48.7 |
| Ratio of the median 8-h TWA estimate or AM/PM personal breathing zone measurement to ambient air concentration . | ||||||||
|---|---|---|---|---|---|---|---|---|
| Overall . | 22 February . | 22 March . | 22 December . | 23 February . | 23 April . | AM* . | PM* . | |
| N | 287 | 74 | 69 | 59 | 42 | 43 | 148 | 139 |
| Min | 0.14 | 1.31 | 1.88 | 2.05 | 0.76 | 0.14 | 0.12 | 0.13 |
| 10th | 1.51 | 1.54 | 2.70 | 2.32 | 0.84 | 0.16 | 1.30 | 1.11 |
| 25th | 2.32 | 1.93 | 4.16 | 2.58 | 1.10 | 2.10 | 1.91 | 2.02 |
| Mean | 4.15 | 3.07 | 6.97 | 3.49 | 2.34 | 4.15 | 4.44 | 4.30 |
| Median | 3.54 | 3.18 | 5.58 | 3.04 | 2.22 | 3.95 | 3.13 | 3.04 |
| 75th | 4.96 | 4.05 | 7.74 | 4.49 | 3.54 | 6.74 | 4.94 | 4.90 |
| 90th | 6.87 | 4.59 | 12.2 | 5.11 | 4.02 | 8.29 | 8.39 | 6.78 |
| Max | 33.6 | 5.73 | 33.6 | 6.83 | 5.41 | 10.2 | 37.5 | 48.7 |
*4-h TWA personal breathing zone measurement.
Distribution of the ratio of 8-h TWA personal breathing zone PM5 (µg/m3) estimates and 4-h measurement components to the paired ambient PM5 measurement for each date.
| Ratio of the median 8-h TWA estimate or AM/PM personal breathing zone measurement to ambient air concentration . | ||||||||
|---|---|---|---|---|---|---|---|---|
| Overall . | 22 February . | 22 March . | 22 December . | 23 February . | 23 April . | AM* . | PM* . | |
| N | 287 | 74 | 69 | 59 | 42 | 43 | 148 | 139 |
| Min | 0.14 | 1.31 | 1.88 | 2.05 | 0.76 | 0.14 | 0.12 | 0.13 |
| 10th | 1.51 | 1.54 | 2.70 | 2.32 | 0.84 | 0.16 | 1.30 | 1.11 |
| 25th | 2.32 | 1.93 | 4.16 | 2.58 | 1.10 | 2.10 | 1.91 | 2.02 |
| Mean | 4.15 | 3.07 | 6.97 | 3.49 | 2.34 | 4.15 | 4.44 | 4.30 |
| Median | 3.54 | 3.18 | 5.58 | 3.04 | 2.22 | 3.95 | 3.13 | 3.04 |
| 75th | 4.96 | 4.05 | 7.74 | 4.49 | 3.54 | 6.74 | 4.94 | 4.90 |
| 90th | 6.87 | 4.59 | 12.2 | 5.11 | 4.02 | 8.29 | 8.39 | 6.78 |
| Max | 33.6 | 5.73 | 33.6 | 6.83 | 5.41 | 10.2 | 37.5 | 48.7 |
| Ratio of the median 8-h TWA estimate or AM/PM personal breathing zone measurement to ambient air concentration . | ||||||||
|---|---|---|---|---|---|---|---|---|
| Overall . | 22 February . | 22 March . | 22 December . | 23 February . | 23 April . | AM* . | PM* . | |
| N | 287 | 74 | 69 | 59 | 42 | 43 | 148 | 139 |
| Min | 0.14 | 1.31 | 1.88 | 2.05 | 0.76 | 0.14 | 0.12 | 0.13 |
| 10th | 1.51 | 1.54 | 2.70 | 2.32 | 0.84 | 0.16 | 1.30 | 1.11 |
| 25th | 2.32 | 1.93 | 4.16 | 2.58 | 1.10 | 2.10 | 1.91 | 2.02 |
| Mean | 4.15 | 3.07 | 6.97 | 3.49 | 2.34 | 4.15 | 4.44 | 4.30 |
| Median | 3.54 | 3.18 | 5.58 | 3.04 | 2.22 | 3.95 | 3.13 | 3.04 |
| 75th | 4.96 | 4.05 | 7.74 | 4.49 | 3.54 | 6.74 | 4.94 | 4.90 |
| 90th | 6.87 | 4.59 | 12.2 | 5.11 | 4.02 | 8.29 | 8.39 | 6.78 |
| Max | 33.6 | 5.73 | 33.6 | 6.83 | 5.41 | 10.2 | 37.5 | 48.7 |
*4-h TWA personal breathing zone measurement.
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