Unconsciousness │ From— │ Recovery of consciousness
after— │ │ after—
│ │
21 sec. = 19.5 km. │20 km. │87 sec. = 10.55 km.
[63,980 ft.] │ [65,600 ft.] │ [34,620 ft.]
15 sec. = 20.875 km. │21 km. │60 sec. = 12.9 km.
[68,490 ft.] │ [68,900 ft.] │ [42,320 ft.]
The astonishing value of 60 seconds = 12.9 km. [42,320 ft.] for the
recovery of consciousness in the 21 km. [68,900 ft.] experiment is
explained on the basis that this value was obtained from a single
experiment with one subject, who had shown himself in numerous other
experiments to be especially resistant to altitude. On the other hand
the 20 km. [65,600 ft.] values are the average of a series of
experiments.