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Table 2 Laboratory altitude, mean barometric pressure, mean laboratory temperature and inspired partial pressure of oxygen.

From: Design and conduct of Caudwell Xtreme Everest: an observational cohort study of variation in human adaptation to progressive environmental hypoxia

Laboratory Approx Altitude metres Ambient Temperature ˚C Barometric Pressure millibar Barometric Pressure mmHg Barometric Pressure Kpa PiO2mmHg PiO2Kpa
LONDON 75 24.1 (1) 1005 754 (10) 100.5 (1.3) 148.0 19.7
KATHMANDU 1300 26.1 (1.5) 867 650 (3) 86.7 (0.4) 126.2 16.8
NAMCHE 3500 19.6 (2.6) 670 505 (3) 67.3 (0.4) 95.4 12.7
PHERICHE 4250 13.1 (1.7) 615 461 (2) 61.5 (0.3) 86.7 11.6
EBC 5300 21.5 (5.6) 538 404 (3) 53.8 (0.3) 74.7 9.9
WCWM 6400 12.7 (3.9) 467 350 (0.9) 46.7 (0.1) 63.4 8.5
SOUTH COL 7950 15.0 (8.9) 389 292 (2.3) 38.9 (0.3) 51.3 6.8
BALCONY 8400 Not recorded 363 272 36.3 47.1 6.3
  1. Altitudes taken from map values to nearest 50 m; Barometric pressures and temperature are mean (standard deviation) values recorded during laboratory testing in the field; PiO2 = Inspired partial pressure of oxygen -calculated from barometric pressures.