subtract 10%iles      0.00000   0.00749516    0.0658247     0.135576
     0.222622     0.340066     0.539610     0.919127      1.80578
diff 10%iles    -0.392333    -0.157924   -0.0656838   -0.0150294      0.00000
    0.0134850    0.0647206     0.158385     0.393455
stardiff 10%iles   -0.0642841   -0.0225047  -0.00684631      0.00000
  0.000564098   0.00862394    0.0190916    0.0366778    0.0798540
stardiff contour -excluded 0.005   -0.0642841    0.0798540