The wells may vary in {HEAD ~ size} and depth depending upon {TAIL ~ the penetration} of the laser beam into the panel of substrate material 18 
depending upon
The wells may vary in { HEAD ~ size } and depth depending upon { TAIL ~ the penetration } of the laser beam into the panel of substrate material 18
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH