subtract 10%iles -0.000413895   0.00726366    0.0132871    0.0190582
    0.0253072    0.0330191    0.0441751    0.0644817     0.120770
diff 10%iles   -0.0438232   -0.0242081   -0.0140610  -0.00643778  0.000343323
   0.00712204    0.0147560    0.0249357    0.0446587
stardiff 10%iles   -0.0316551   -0.0181322   -0.0103987  -0.00435479
   0.00109659   0.00656374    0.0126435    0.0204840    0.0343790
stardiff contour -excluded 0.005   -0.0316551    0.0343790