The task for one of our project courses in the last year climatization was: create a Mollier diagram in Excel. The result of the student Bjorn Es looks great.

In the Excel sheet you can easily set the temperature and the relative humidity. This point is highlighted on the graph. The entire graph is generated in Excel. It is not a picture! When you change the altitude above sea level, all the points are calculated again and the graph is updated. The Excel sheet is provided "as is". There was a checkup, but this sheet can contain errors.

This project was continued. There is a new version available.