Scatter plot of (A) mean pulmonary arterial pressures; (B) systolic pulmonary arterial pressures; (C) diastolic pulmonary arterial pressures; and, (D) pulmonary arterial pulse pressures obtained from calves at 3 mo of age, according to survival status to 7 mo of age, and 7 mo of age. Measurements were taken at an altitude of 2,730 m. Calves presumed to have died before 7 mo of age are individually identified by a number. Median and quartiles are represented by dashed lines. * indicates P < 0.05 between calves presumed to have died and those that survived to 7 mo.