subtract 10%iles -9.29832e-05   0.00721216    0.0137901    0.0209179
    0.0295308    0.0410099    0.0582113    0.0892544     0.172710
diff 10%iles   -0.0808182   -0.0356379   -0.0186791  -0.00839424 -8.63075e-05
   0.00819683    0.0183902    0.0351238    0.0798755
stardiff 10%iles   -0.0282144   -0.0145274  -0.00779351  -0.00288028
   0.00144423   0.00576499    0.0107039    0.0174900    0.0312063
stardiff contour -excluded 0.005   -0.0282144    0.0312063