subtract 10%iles -7.72476e-05    0.0228472    0.0436883    0.0663412
    0.0930538     0.126763     0.173277     0.246622     0.401207
diff 10%iles    -0.156738   -0.0778484   -0.0422068   -0.0186577  0.000823498
    0.0203311    0.0439777    0.0796094     0.157965
stardiff 10%iles   -0.0377375   -0.0194807  -0.00992573  -0.00286189
   0.00331818   0.00945191    0.0163299    0.0254016    0.0420288
stardiff contour -excluded 0.005   -0.0377375    0.0420288