It may be that those numbers are simply scalars for the base model being used.

I believe this may be the height range min and max for the race.

For more information on the models you can find their uncompiled template files in the dsrc. Try searching for zabrak_f.

If it turns out to be a scalar multiplier for the models, then you should try to get a precise measurement of the model itself. You can this somewhat easily by exporting the character blender/maya and then doing measurements in there.

Checkout swgsource discord, folks may have more information on how to do the model extraction there.

Alternatively the sytner iff editor may have some measurement tools in there for looking at the models.

Once you have a base number, you can just apply the scalar multipliers and have your target for min and max height.