subtract 10%iles -7.58171e-05   0.00552344    0.0100813    0.0145378
    0.0194082    0.0254259    0.0341043    0.0498047    0.0930252
diff 10%iles   -0.0406895   -0.0212264   -0.0121093  -0.00550079  0.000292063
   0.00607133    0.0126514    0.0217419    0.0413098
stardiff 10%iles   -0.0232001   -0.0132305  -0.00746843  -0.00295253
   0.00111116   0.00515621   0.00961129    0.0153240    0.0254486
stardiff contour -excluded 0.005   -0.0232001    0.0254486