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HIT RATE BY RANGE BAND  (our shots; band = shooter->target distance px at the fire tick)
session: /tmp/ab_headon   arms: control, headon   reference: control
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band                         control                    headon
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0-100                3     2   66.7%           1     0    0.0%
100-200             28     4   14.3%          97     8    8.2%
200-300            211    26   12.3%         469    12    2.6%
300-450           4590   565   12.3%        3701    21    0.6%
450+              6671   616    9.2%        4177    15    0.4%
ALL              11503  1213   10.5%        8445    56    0.7%

PER-RUN BAND RATES (shows the spread behind the pooled numbers)
  band 0-100
    control    n= 2  50 100
    headon     n= 1  0
  band 100-200
    control    n=11  0 0 0 20 0 0 0 0 30 0 0
    headon     n=15  0 30 0 0 0 0 0 0 0 14 11 0 17 25 0
  band 200-300
    control    n=15  8 17 40 0 40 17 20 10 9 14 15 0 5 12 11
    headon     n=15  3 4 6 0 4 0 4 3 0 4 4 3 3 0 0
  band 300-450
    control    n=15  14 11 15 13 13 10 11 15 15 10 10 11 14 11 13
    headon     n=15  0 0 1 1 0 0 0 0 0 1 0 1 1 1 0
  band 450+
    control    n=15  9 11 7 8 9 10 9 10 10 8 11 9 10 9 9
    headon     n=15  0 0 0 0 1 1 1 0 0 0 0 0 1 0 0
  band ALL
    control    n=15  10 11 9 10 11 10 10 12 12 9 11 10 12 10 11
    headon     n=15  0 1 1 0 1 1 1 1 0 1 1 1 1 1 0

PER-BAND PERMUTATION TEST vs `control` (per-run rates, two-sided)
band       arm          d(pp)         p method          MCse  MDE(pp)
------------------------------------------------------------------
0-100      headon      -75.00    0.6667 exact         0.0000    99.05
100-200    headon       +1.93    0.6609 exact         0.0000    12.37
200-300    headon      -12.12    0.0000 MC/B=200,000  0.0000    12.07
300-450    headon      -11.84    0.0000 MC/B=200,000  0.0000     1.96
450+       headon       -8.89    0.0000 MC/B=200,000  0.0000     1.14
ALL        headon       -9.90    0.0000 MC/B=200,000  0.0000     1.02