subtract 10%iles  0.000448704   0.00617456    0.0109978    0.0158577
    0.0214415    0.0287976    0.0400066    0.0605927     0.117096
diff 10%iles   -0.0431046   -0.0217276   -0.0122609  -0.00554085  0.000288010
   0.00609350    0.0127335    0.0220737    0.0431480
stardiff 10%iles   -0.0247635   -0.0137683  -0.00771055  -0.00304161
   0.00111789   0.00524026   0.00980170    0.0157250    0.0267713
stardiff contour -excluded 0.005   -0.0247635    0.0267713