For funs.... any ET guesses ??

I guessed 16.45. I used the ‘Penalty Box’ to come up with that guess, plus added a couple tenths for assumed bad summer air. Of course I could have missed it by a little but wow, I think you bombed that index, good job!
You know, I didn't even think ONCE to see how it stacked up against the penalty box. Good thinking and I'm glad you mentioned it. So if you added a couple tenths, then the box had a index of 16.25. Another example where the box is close, and also that the 318 in DT did run hard for what it is.