subtract 10%iles  -0.00161552      0.00000    0.0439808     0.116843
     0.213881     0.353111     0.573417     0.976264      1.92400
diff 10%iles    -0.453376    -0.195895   -0.0859127   -0.0210392      0.00000
    0.0141542    0.0760841     0.181965     0.434635
stardiff 10%iles   -0.0703686   -0.0276420   -0.0100659 -4.13656e-05
      0.00000   0.00697780    0.0173045    0.0330606    0.0691168
stardiff contour -excluded 0.005   -0.0703686    0.0691168