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Partial pressures in oxygen as a function of altitude in percents of sea-level partial pressure.
| Altitude (m) | Oxygen partial pressure |
|---|---|
| (% of sea-level) | |
| 0 | 100% |
| 1,000 | 89% |
| 2,000 | 79% |
| 3,000 | 69% |
| 4,000 | 60% |
Data from West (2004), sea-level oxygen partial pressure is 19.8 kPa.
