Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Developmental trajectory of diurnal and nocturnal oxyhemoglobin saturation (SpO2) values. Difference between diurnal and nocturnal mean oxyghemoglobin saturation at three different altitudes by age group (infants, 6–12 mo old; children, 4–10 years old; adolescents, 13–17 years old). Altitude values are: high > 3,650 m, moderate 2,500 m, and low 500 m. Error bars are standard errors.
