US76 atmospheric model
[temp,pres,dens] = CL_mod_atmUS76(alt)
Computes temperature, pressure, and density at a given altitude using US76 atmospheric model.
Notes:
- The US76 atmospheric model can be used for altitudes in [0 - 1000] km.
- Altitudes below 0 km are silently enforced to 0 km.
- Results for altitudes above 1000 km are set to %nan.

Altitude [m] (1xN)
Kinetic temperature [K] (1xN)
Pressure [Pa] (1xN)
Density [kg/m^3] (1xN)
CNES - DCT/SB
1) CNES - MSLIB FORTRAN 90, Volume P (mp_atm_US76)