[dredmorbius]

Point. I'd taken values from the linked source, which appears to be in error. The Celsius values don't correspond to F2C conversion, as you note.

Though my final at-elevation result remains unchanged: 72°F / 22.2°C, a 15.5 degC drop.

https://treelinebackpacker.com/2013/05/06/calculate-temperat...