subtract 10%iles  -0.00132370   0.00963497    0.0189908    0.0286093
    0.0395145    0.0532753    0.0731030     0.107792     0.196772
diff 10%iles   -0.0681658   -0.0357265   -0.0203266  -0.00926304  0.000397682
    0.0100503    0.0211062    0.0364866    0.0688095
stardiff 10%iles   -0.0362483   -0.0198425   -0.0108214  -0.00396188
   0.00213032   0.00819141    0.0149382    0.0237023    0.0394274
stardiff contour -excluded 0.005   -0.0362483    0.0394273