subtract 10%iles  -0.00132179   0.00655031    0.0135856    0.0214672
    0.0315571    0.0459876    0.0691090     0.112680     0.229763
diff 10%iles   -0.0980997   -0.0415554   -0.0210056  -0.00910664  0.000257492
   0.00961018    0.0214634    0.0419312    0.0987320
stardiff 10%iles   -0.0315793   -0.0150894  -0.00775502  -0.00256975
   0.00194694   0.00649153    0.0117689    0.0193281    0.0361351
stardiff contour -excluded 0.005   -0.0315793    0.0361351