subtract 10%iles      0.00000   0.00118303    0.0307735    0.0652890
     0.106864     0.161885     0.242725     0.379578     0.699964
diff 10%iles    -0.262873    -0.108418   -0.0468836   -0.0113575      0.00000
   0.00846016    0.0429928     0.103153     0.257735
stardiff 10%iles   -0.0382633   -0.0135812  -0.00414389      0.00000
  0.000394672   0.00546047    0.0118087    0.0217547    0.0450165
stardiff contour -excluded 0.005   -0.0382633    0.0450165