A great feature that I sometimes use in another program is the ability to import a jpeg, png or other image format of an existing graph and extract the data in the graph into a data table for analysis. This is especially useful for graphs with complex axis, poor readability, or large data density. It is not perfect, but it is a great way to get a little more accuracy when reading data from a two axis plot.
Example graph https://images.app.goo.gl/ZfeLChan6fTkj8RAA
Example of feature https://www.originlab.com/videos/details.aspx?pid=2105