Thank you very much.  In addition to the output file I uploaded there is also some additional header information, which was messing things up but I think I've worked my way around it now.
 
Thanks again, if I have any more problems I'll be sure to mention them!  The next hurdle is to make a vector plot, but that is off-topic!
 
Thanks!
					
				
			
			
				
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LabVIEW 8.5 User.