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I am doing a simple mathematical model of an airship. I need the data for air temperature, density and pressure for different altitudes. Could anyone give me any web address where I could find these data?

I am not native to this field, so I don't know how do these quantities change with altitude. I was thinking about doing an approximate formulas upon these data.

I would like to write a system of forces and then get a differential equation. In the end I could get a formula for heigh change.

Regards,

Niko

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# Atmosphere data

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