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Mean SO2 values in percent (%) at high altitude (4559 m) at different time points after ascent. SO2 = peripheral/arterial oxygen saturation; GAR = Garmin Fēnix® 5X Plus; COV = Covidien Nellcor Portable SpO2 Patient Monitoring; ABG = Radiometer ABL 90 Flex. Data given in mean ± SD.
