Why not use a barometer or altimeter for air pressure, a temp gage and do real time calculations in some sort of density altitude app on your phone?
Use google maps or 5 sattelite gps for altitude corections
Isn't density altitude not the same as what you are creating?
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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