subtract 10%iles      0.00000   0.00275622    0.0468597    0.0958800
     0.154489     0.231594     0.344394     0.539100      1.00735
stardiff 10%iles    -0.453866    -0.186305   -0.0786728   -0.0171659
      0.00000    0.0155542    0.0769798     0.185458     0.456655
stardiff contour -excluded 0.005    -0.453866     0.456654