On the graph window, click Graph - New - Table, and the data will appear on a table. Use Edit - Measurements (Add) to put all of the data you want in the table. Cut and paste it to a text file for future use. An easy way to do this is to put the cursor before the first frequency. Hold down CTRL - SHFT - END (there is an END key), and this will highlight the whole document. Open a text editor, and press the middle mouse button to paste. Place a variable name at the top with a square brace (a = [ ) and place a closing square brace at the end of the document. Save the file as file_name.m. When you are ready to use it in Matlab, get in the directory where you saved the file and type: >> file_name. In this case the data will all be stored in the variable "a." You can then use the variable a to make plots or calculations as desired.