subtract 10%iles      0.00000      0.00000    0.0639863     0.148711
     0.248823     0.388754     0.614578      1.03099      2.03061
diff 10%iles    -0.474750    -0.202357   -0.0878639   -0.0208194      0.00000
    0.0162811    0.0820520     0.193135     0.459365
stardiff 10%iles   -0.0725160   -0.0279648   -0.0100856      0.00000
      0.00000   0.00812020    0.0196227    0.0377531    0.0805562
stardiff contour -excluded 0.005   -0.0725160    0.0805562