PubMed Central, : RMMJ Rambam Maimonides Medical Journal Rambam Health Care Campus 2011 January; 2(1): e0022. ISSN: 2076-9172Published online 2011 January 31. doi: 10.5041/RMMJ.10022.

Table 2.

Changes in barometric pressure and inspired PO₂ with altitude.^*

Meters	Feet	Barometric pressure mmHg	Inspired PO₂ (% of sea-level)
0	0	149	100%
1,000	3,281	132	89%
2,000	6,562	117	79%
3,000	9,843	103	69%
4,000	13,123	90	60%
5,000	16,404	78	52%
6,000	19,685	67	45%
7,000	22,966	58	39%
8,000	26,247	51	34%
9,000	29,528	42	28%

^* Adapted from West JB. J Appl Physiol 1996;81:1850–4.

RMMJ Rambam Maimonides Medical Journal Rambam Health Care Campus 2011 January; 2(1): e0022. ISSN: 2076-9172

Published online 2011 January 31. doi: 10.5041/RMMJ.10022.