subtract 10%iles      0.00000   0.00789523    0.0657353     0.131046
     0.219957     0.350790     0.565564     0.966545      1.89285
stardiff 10%iles    -0.369561    -0.158426   -0.0700544   -0.0179614
      0.00000   0.00999886    0.0596692     0.145775     0.355799
stardiff contour -excluded 0.005    -0.369561     0.355799