subtract 10%iles      0.00000      0.00000    0.0268232    0.0625892
     0.107070     0.169989     0.268291     0.436171     0.809978
diff 10%iles    -0.299989    -0.120725   -0.0498438   -0.0111811      0.00000
   0.00933695    0.0465100     0.115526     0.292923
stardiff 10%iles   -0.0434076   -0.0147636  -0.00400764      0.00000
  0.000871487   0.00638088    0.0134084    0.0248588    0.0514333
stardiff contour -excluded 0.005   -0.0434076    0.0514333