http://www.nfl.com/news/story/0ap3000000631719/article/roger-goodell-no-psi-violations-in-2015-spot-checks

The NFL found no issues with football inflation during the course of the 2015 season

The spot checks found no PSI violations

There were no violations this year.

This confirms what Professor Marlowe (a Professor of Physics and former Chairman of the Department of Physics at Princeton University) stated during the arbitration hearing - that weather alone is not enough to cause the Patriots footballs to be deflated that much below the legal limit and that human tampering must have been involved in the deflation of the Patriots footballs.