Analysis at different acceptance angles for one million rays in Trace Pro At 11.5° At 11° At 10.5° At 10° At 9.5° At 9° At 8.5° At 8° At 7.5° At 7° At 6.5° At 6° At 5.5° At 5° At 4.5° At 4° At 3.5° At 3° At 2.5° At 2° At 1.5° At 1° At 0.5° At 0° At -0.5° At -1° At -1.5° At -2° At -2.5° At -3° At -3.5° At -4° At -4.5° At -5° At -5.5° At -6° At -6.5° At -7° At -7.5° At -8° At -8.5° At -9° At -9.5° At -10° At -10.5° At -11° At -11.5°