Key piece of information someone needs to obtain:
- Temperature of air Pats pumped the balls up with in the first place (i.e., where'd they pump it + method).
- Temperature of air Colts pumped their balls up in the first place (i.e., again - where & how)
- Temperature of air Pats pumped balls up with for 2nd half. (where & how)
- How much, if any, drop there was in the Colts balls (all we know is they stayed legal, but started higher).
- If the Colts touched their balls at all during the game to keep them at the level they were pre-game.
Considering how unscientific the process has been thus far, I don't expect the NFL has considered or will considered obtaining this information. Reading into their leaks - they decided to blame it on the Pats from the get go.
All they need to do is replicate the purported initial conditions in which the balls were pumped, and then test them at similar conditions as the game several hours later. Will they? No!