subtract 10%iles  0.000365257   0.00650978    0.0115614    0.0165434
    0.0220547    0.0289421    0.0390196    0.0580578     0.115797
diff 10%iles   -0.0416012   -0.0214281   -0.0121961  -0.00550842  0.000366211
   0.00623250    0.0129261    0.0222487    0.0429535
stardiff 10%iles   -0.0247742   -0.0140084  -0.00792171  -0.00316432
   0.00112121   0.00539624    0.0101151    0.0162331    0.0276646
stardiff contour -excluded 0.005   -0.0247742    0.0276646