What I'm saying is that any analysis is subject to a great deal of uncertainty, not that the impact is minimal. The guess is just for fun. Do you disagree that

What I'm saying is that any analysis is subject to a great deal of uncertainty, not that the impact is minimal. The guess is just for fun. Do you disagree that the effect of NOx probably varies greatly between LA County and any place without the same amount of traffic or special geography? You're welcome to make your own guess for the purpose of discussion.