Mirror Diameter = 152 mm    Mirror Radius = 76 mm
  The center 5% of the mirror area is excluded

 Zone      Inner         Outer    Corrected Center
   #       Radius        Radius        Radius
 -----   ---------     ---------     ---------
   1    16.9941 mm    46.0203 mm    33.1364 mm
   2    46.0203 mm    62.8246 mm    54.7458 mm
   3    62.8246 mm    76.0000 mm    69.5684 mm