The QNT Editor
UV Spectra (UV)

On the UV tab page, you can process UV spectra before you use them. Define the number of single peak spectra to be averaged. Also, define how many background spectra are aggregated into a total background spectrum that is subtracted from the averaged peak spectrum afterward.

 Note: 

The UV tab is hidden by default. To show the UV tab, choose Select Sheets on the View menu. In the Select Sheets dialog box, select the UV check box and click OK.

For more information, refer to Displaying and Using UV Spectra  Processing UV Spectra.