Issue423

[kafitzgerald]

PR Summary

Fix bug in _temp_extrapolate used by interp_hybrid_to_pressure.

Closes #423

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[kafitzgerald]

Shoot! I just updated the test data subset on one side. Marking this as a draft until I fix that.

[kafitzgerald]

Still failing, but only because of what seems to be a precision issue w/ a different function (only w/ the new test data subset).

[kafitzgerald]

Ok, pulled the testing updates (though for what it's worth all relevant tests passed w/ the new test data)- will continue looking into that in a separately. Should be ready for review now.