subtract 10%iles      0.00000   0.00805426    0.0691266     0.141055
     0.231804     0.356916     0.571067     0.977446      1.89613
diff 10%iles    -0.404639    -0.164774   -0.0689747   -0.0160162      0.00000
    0.0136280    0.0667303     0.163344     0.403852
stardiff 10%iles   -0.0623212   -0.0225947  -0.00737214      0.00000
  7.62939e-06   0.00783830    0.0180347    0.0348038    0.0749690
stardiff contour -excluded 0.005   -0.0623212    0.0749690