Hi, CellHeader=X Y MEAN STDV NPIXELS 0 0 152.0 30.0 25 1 0 5024.5 475.3 20 2 0 151.0 25.0 25 3 0 5017.0 558.9 25 4 0 205.5 71.5 20 How can I get to know what 0 0 , 1 0, 2 0 correspond to 1001_at or XXXX_at. Can some one please help. I want to get the spot and the corresponding probe. Thank you. Srini