It comes out to 15632 psi, or slightly less in psig. That comes to a jumbo jet for every 47 square inches. They are assuming about 16 square feet of area on the body. That is a little less than a woman (17 sq ft), and a good bit less than a man (20 sq ft). Pressure is exerted in all directions, not just from above.
The blue stripe on surgical gauze is visible on an X ray, just for this purpose.