subtract 10%iles      0.00000   0.00209173    0.0403405    0.0863365
     0.142770     0.221710     0.340729     0.535663     0.958513
diff 10%iles    -0.349899    -0.144212   -0.0598994   -0.0135818      0.00000
    0.0107446    0.0554965     0.137802     0.344840
stardiff 10%iles   -0.0503890   -0.0171306  -0.00446071      0.00000
   0.00105414   0.00760192    0.0161918    0.0301272    0.0614224
stardiff contour -excluded 0.005   -0.0503890    0.0614224