0.   20.   40.   60.   80.
   0.    5.   10.   20.   30.   40.   50.   60.   70.   80.
1.000 1.067 1.140 1.226 1.318 1.387 1.441 1.474 1.551 1.857
1.012 1.079 1.155 1.219 1.318 1.388 1.414 1.503 1.584 1.852
1.003 1.065 1.132 1.209 1.309 1.382 1.417 1.470 1.592 1.882
 .949  .995 1.049 1.126 1.226 1.299 1.374 1.442 1.574 1.893
 .526  .550  .573  .638  .731  .855  .961 1.114 1.389 1.797
  
tau_alpha normal                    =   .6174
tau_alpha diffuse                   =   .7918
aperture area [m^2]                 =  2.4800
backplane area/aperture area        =  1.1008
backplane-tube center distance [cm] =  8.3000
backplane diffuse reflectance       =   .0000
backplane specular reflectance      =   .6000
backplane semi-specular reflectance =   .0000
backplane r_d power                 =   .0000
backplane r_ss power                =   .0000
glass thickness*extinction coef.    =   .0260
index of refraction                 =  1.5000
outside radius of glass             =  6.3000
radius of collector cylinder        =  5.5000
length of cylinders                 =  200.00
tolerance                           =   .0100
# of directions converged on        =  50
  
 Tube Centers:
-54.70 -40.30 -25.90 -11.50  11.50  25.90  40.30  54.70