Dot-plot of Values   Make random values

A dot plot is made by stacking dots above the rounded-value positions
  with these values,
rounded to the nearest multiple of:
Rounded values: 10 60 0 30 70 40 50 70 20 20 20 20 -10 10 40 40 0 0 10 0 10 30 50 0 60 50 30 10 20 40 10 40 30 60 30 -10 10 20 -10 20 40 20 0 0 50 50 30 40 -10 10 -10 0 10 20 30 40 50 60 70