subtract 10%iles  8.53539e-05    0.0295129    0.0570765    0.0865917
     0.120444     0.161938     0.217058     0.300020     0.469460
diff 10%iles    -0.195495   -0.0999985   -0.0552444   -0.0247622  0.000753403
    0.0262589    0.0566978     0.101301     0.195870
stardiff 10%iles   -0.0464372   -0.0233958   -0.0115261  -0.00295875
   0.00443094    0.0117033    0.0198387    0.0306577    0.0505977
stardiff contour -excluded 0.005   -0.0464372    0.0505977