How do I get the desired Bahnschrift font weight?

Question

css

We have the following:

1) Font family file:



2) If we open it and scroll through it, we see different font names:




I need 3-4 different styles out of 15 available. When connecting and iterating over the font-weight property, the style I need does not come across.

How can I extract a certain font (style) from one file?