subtract 10%iles -0.000532627   0.00926447    0.0179491    0.0272884
    0.0385170    0.0534630    0.0756302     0.113861     0.205899
diff 10%iles   -0.0895920   -0.0422974   -0.0227051   -0.0100002  0.000564575
    0.0111213    0.0237927    0.0433655    0.0906243
stardiff 10%iles   -0.0300970   -0.0162152  -0.00864424  -0.00286493
   0.00227787   0.00737452    0.0130045    0.0203038    0.0336475
stardiff contour -excluded 0.005   -0.0300970    0.0336475