But actual numbers, representing an actual temperature that was warming.

A pulse became detectable.

Not by the usual means — the wrist pulse, the carotid pulse — but with equipment that could detect the electrical activity of the heart.

The rate was slow.

Reports put it at approximately 12 beats per minute.

A normal resting heart rate is 60 to 100 beats per minute.

Twelve beats per minute is not a heartbeat that sustains normal brain function or normal tissue perfusion.

Twelve beats per minute is barely a heartbeat at all.