subtract 10%iles  -0.00466824      0.00000    0.0132022    0.0394125
    0.0712025     0.113088     0.174961     0.284449     0.559874
diff 10%iles    -0.240454   -0.0944605   -0.0402956  -0.00950789      0.00000
   0.00784206    0.0383103    0.0922780     0.238805
stardiff 10%iles   -0.0349985   -0.0120115  -0.00339921      0.00000
  0.000824422   0.00562630    0.0115489    0.0209079    0.0439478
stardiff contour -excluded 0.005   -0.0349985    0.0439478