subtract 10%iles   0.00121307   0.00760984    0.0127745    0.0178399
    0.0235443    0.0309010    0.0418062    0.0608082     0.110048
diff 10%iles   -0.0447235   -0.0226374   -0.0128045  -0.00583649  0.000216484
   0.00623012    0.0130911    0.0227537    0.0448132
stardiff 10%iles   -0.0257464   -0.0144256  -0.00815129  -0.00330381
   0.00103431   0.00533495    0.0100579    0.0161494    0.0273720
stardiff contour -excluded 0.005   -0.0257464    0.0273720