subtract 10%iles  -0.00103855   0.00668287    0.0136371    0.0214086
    0.0312262    0.0451221    0.0673714     0.109685     0.222588
diff 10%iles   -0.0928044   -0.0397778   -0.0203438  -0.00893085  0.000119209
   0.00914383    0.0204606    0.0395989    0.0912197
stardiff 10%iles   -0.0300700   -0.0148083  -0.00770743  -0.00261683
   0.00183700   0.00631408    0.0114854    0.0187852    0.0343383
stardiff contour -excluded 0.005   -0.0300700    0.0343383