| 10 min | 30 min | 60 min | 4 hr | 8 hr | |
|---|---|---|---|---|---|
| ppm | |||||
| AEGL 1 | 2.5 | 2.5 | 2.0 | 1.3 | 1.0 |
| AEGL 2 | 17 | 10 | 7.1 | 3.5 | 2.5 |
| AEGL 3 | 27 | 21 | 15 | 8.6 | 6.6 |
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United States Environmental Protection Agency
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| 10 min | 30 min | 60 min | 4 hr | 8 hr | |
|---|---|---|---|---|---|
| ppm | |||||
| AEGL 1 | 2.5 | 2.5 | 2.0 | 1.3 | 1.0 |
| AEGL 2 | 17 | 10 | 7.1 | 3.5 | 2.5 |
| AEGL 3 | 27 | 21 | 15 | 8.6 | 6.6 |