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.
Ascent profile for the expedition showing testing sites and times by the filled circles on the continuous ascent profile line. Also shown is the barometric pressure (dotted line) during the ascent. Filled circles denote times and altitudes where echocardiographic measurements were obtained
