[danilorj]

Guys,
   I'm trying to do a computer simulation and I want to verify whether some datas are coherent. I got a humidity of air at 25 celsius degrees at 0.5 and if I raise this temperature to 80 celsius degrees, is it possible to expect a humidity of 0.04? What is the dependence of humidity with temperature?

[danilorj]

I wanna to know if this graph is correct.

[Arkcon]

Here's the one from Wikipedia.  It uses likely uses different units than you do (I say likely, because you haven't labeled your units), and uses different terms, but it does have a similar shape.