subtract 10%iles      0.00000      0.00000    0.0271630    0.0660911
     0.114772     0.180713     0.284147     0.459671     0.850966
diff 10%iles    -0.314702    -0.127259   -0.0522900   -0.0114263      0.00000
   0.00998497    0.0495787     0.122762     0.309698
stardiff 10%iles   -0.0434224   -0.0142150  -0.00345159      0.00000
   0.00131974   0.00709990    0.0145416    0.0265616    0.0540287
stardiff contour -excluded 0.005   -0.0434224    0.0540287