    3   35.90
    5   30.66
    7   29.82
   10   35.94
   15   42.98
   20   47.78
   25   50.85
   30   47.83
   35   43.93
   40   45.05
   50   48.63
   60   48.76
   70   50.72
   80   53.15
  100   64.19
  125   66.08
  150   64.75
  180   63.53
  200   64.45
  250   71.36