subtract 10%iles      0.00000   0.00139626    0.0415314    0.0907273
     0.151090     0.235234     0.360009     0.560700     0.991955
diff 10%iles    -0.359344    -0.148979   -0.0620903   -0.0138717      0.00000
    0.0112317    0.0573740     0.141971     0.354256
stardiff 10%iles   -0.0523071   -0.0180383  -0.00475215      0.00000
   0.00102514   0.00775956    0.0165384    0.0304858    0.0618652
stardiff contour -excluded 0.005   -0.0523071    0.0618652