subtract 10%iles      0.00000   0.00881004    0.0564294     0.107922
     0.170354     0.258747     0.402092     0.679339      1.36355
diff 10%iles    -0.340415    -0.135714   -0.0563126   -0.0128515      0.00000
    0.0117486    0.0560966     0.137315     0.346273
stardiff 10%iles   -0.0536781   -0.0184313  -0.00554276      0.00000
  0.000608634   0.00752290    0.0163819    0.0310013    0.0676480
stardiff contour -excluded 0.005   -0.0536781    0.0676480