Yes, you'll just have to separate the raw and calculated data into 2 different 'write' functions where you programically have each set written to its own worksheet. There are good answers on how to send data to a new Excel worksheet. Look at the attached link and see if they fit your need, or at least give you some ideas.
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500000008000000B1240000&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0
Good luck with it,
Doug