I've been trying to get a decent numerical approximation (curve fit) of Earth's Atmosphere Model, and found what I was looking for at this NASA's web site. However, when checking some basic calculations, the very first formula for stratosphere temperature:
$T = -131.21 + 0.00299 h$
is just simply wrong: When entering a value of 80 km (80000 meters) for $h$, the temperature I get is 107.99°C. This cannot possibly be correct, and it is far from what other on-line engineering resources say (for example, EngineeringToolBox )
Am I doing something wrong, or is the formula incorrect?