how to find or calculate density altitude ...
Is there an instrument or way to calculate density altitude when at the track that doesn't require one of these $$$ weather stations? I like to keep accurate records of my runs including weather conditions and would like to add in DA but don't know how to find or calculate it. I really don't want to spend $500+ on a weather station or predictor although the ones I've seen at the track are very, very nice. It is a FI car so I'll have my laptop with me so if they have wireless there I may be able to pick that up if it helps.
Thanks.
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