Import Spreadsheet X/Y Data As Points

I need to make airfoil ribs on my 3D printer for RC gliders. The data is originally a text document with an X/Y pair on each line representing a point. Later, they are connected with a spline function. The data set can also be put into a CSV spreadsheet. How would I import this data so I don't have to draw or type in each point? The X data is normalized to the foil length of 1.0 but the Y data goes out to six places and each set may have over 200 points.

Thanks