subtract 10%iles  -0.00134230   0.00743866    0.0154696    0.0244150
    0.0354776    0.0505247    0.0731478     0.112792     0.209921
diff 10%iles    -0.103642   -0.0463190   -0.0238647   -0.0104041  0.000343323
    0.0110598    0.0244091    0.0465498     0.103008
stardiff 10%iles   -0.0307883   -0.0156475  -0.00818220  -0.00266897
   0.00219140   0.00703078    0.0124949    0.0198976    0.0346426
stardiff contour -excluded 0.005   -0.0307883    0.0346426