subtract 10%iles      0.00000   0.00100591    0.0324531    0.0679181
     0.108888     0.160053     0.231171     0.346676     0.611340
stardiff 10%iles    -0.224190    -0.100503   -0.0485083   -0.0157413
      0.00000   0.00448838    0.0368803    0.0900121     0.216325
stardiff contour -excluded 0.005    -0.224190     0.216325