configuration            new z    repeats z     new        used       diff
  midpoint                 39.920     0.000  1.7489e+08 1.7375e+08   +0.66%
  quarter / three-quarter   49.980    29.850  2.5041e+08 2.5092e+08   -0.20%

largest disagreement 0.66%; the figure's modulation is 69%, so this does not bear on it