subtract 10%iles  0.000858307    0.0110025    0.0207486    0.0318525
    0.0458407    0.0649586    0.0935011     0.143044     0.261971
diff 10%iles    -0.116932   -0.0520668   -0.0265999   -0.0116444  1.66893e-05
    0.0115833    0.0262299    0.0510435     0.115167
stardiff 10%iles   -0.0345430   -0.0169038  -0.00868249  -0.00283347
   0.00225004   0.00731176    0.0130853    0.0210882    0.0374917
stardiff contour -excluded 0.005   -0.0345430    0.0374917