[Tom Goldman]

Look at the Alta Lab weather station .
Biondo sells them ,and if you look around the pits ,I think you'll see quite a few of them.
I've had mine for 5 years with no problems,and when you call the company with a question ,they are very supportive and easy to deal with.
If you dont have a prediction program, the one that comes with their unit is quite good, I use it for a backup for Crew Chief Pro ,and it is usually identical in its prediction.