subtract 10%iles      0.00000   0.00266534    0.0411224    0.0855515
     0.140350     0.216524     0.332297     0.523552     0.939732
diff 10%iles    -0.344180    -0.141418   -0.0588670   -0.0132213      0.00000
    0.0108635    0.0545678     0.135031     0.338212
stardiff 10%iles   -0.0499344   -0.0170803  -0.00450176      0.00000
   0.00112635   0.00774490    0.0162106    0.0296968    0.0599701
stardiff contour -excluded 0.005   -0.0499344    0.0599701