subtract 10%iles      0.00000   0.00166798    0.0324957    0.0678830
     0.110029     0.166896     0.249709     0.389177     0.717756
diff 10%iles    -0.252918    -0.100063   -0.0422723  -0.00968838      0.00000
   0.00878882    0.0416651     0.100521     0.255761
stardiff 10%iles   -0.0380745   -0.0122643  -0.00320505      0.00000
   0.00110235   0.00628021    0.0129469    0.0237736    0.0501507
stardiff contour -excluded 0.005   -0.0380745    0.0501507