subtract 10%iles  0.000850201   0.00670958    0.0116930    0.0167832
    0.0226984    0.0305462    0.0426426    0.0657768     0.131299
diff 10%iles   -0.0437429   -0.0221348   -0.0125837  -0.00590897 -0.000142097
   0.00560927    0.0122533    0.0217133    0.0430689
stardiff 10%iles   -0.0243261   -0.0133888  -0.00756547  -0.00317091
  0.000736969   0.00463283   0.00900745    0.0148235    0.0259484
stardiff contour -excluded 0.005   -0.0243261    0.0259484