subtract 10%iles      0.00000      0.00000    0.0295477    0.0670470
     0.110564     0.165726     0.242534     0.365753     0.636122
stardiff 10%iles    -0.230774    -0.101832   -0.0478429   -0.0148032
      0.00000   0.00460290    0.0376866    0.0939638     0.229598
stardiff contour -excluded 0.005    -0.230774     0.229598