Mr P You leave in bad air and it gets better and it would be the same air as your trailer reading if you have a fan in your unit which I believe the Tag does.Take a reading from your trailer and the track and see if its the same as the line,or staging lanes.If your dialing in from the line I will guarntee you will be more consistant from the trailer.Give it a shot and if Iam wrong come on here and tell me so.
I've checked it at the trailer VS the line and yes
they are different but you cant tell me which is
more correct... might be fine if your trailer was
parked at 1/2 track along the fence closest to the track.
Either way if you take the SAME readings all the time
its immaterial... just as long as its the same way
