I guess you're talking about psi.
(No offense to you, dear Buffaloaf, I just looked it up and thought I might share).
For everyone of the 191 non-USA countries, 10 psi is 0,69 bar or 690 hPa. That's pretty low.
By the way, why is psi written in such a weird way? It should be lbs/ in^2
Thanks, friend :)
I know how it comes to be, I just think it's stupid.
For example, kW times h is not the same as kW per hour. That's why kWh means kilowatt times hour.
If I wrote ms to denote meters per second that would create massive confusion.