Is it okay to delete temp files from NORTON folder?

Hi

 

I am trying to make more room on my C drive and so have been going through my directory and deleting old .tmp files.

 

What I was wondering, is it okay to delete any .tmp files from the Norton folder.

 

These files take the name of "nav(digit digit).tmp and sit in my All Users\Application Data\Norton\{long number code}\NS.....

 

Are these files okay to get rid of or are they necessary to Norton?

 

Many thanks for your time.