This is where NDT gets his numbers:
If we go by the Ideal Gas Law, a gas at 12.5 psi and 70 ℉ when lowered to 50 ℉ will drop to 11.5 psi. Which is a change in psi of only 1. This calculation uses absolute pressure and absolute temperature and is agreed upon by Pats fans and non-fans. But unfortunately the atmosphere is…