It would not be very useful to export all the 3977 data points. With the Process button you can activate an averaging and interpolating procedure which constructs as many output points as you have specified below the Process button (in this case 100).

The output points cover the x-range of the digitized points. They are equi-distant.

With the present settings one gets, after pushing the Process button, the following results:

With the menu command Export data you can write these values to a text file of your choice. Or go on with step 5.