subtract 10%iles      0.00000   0.00343625    0.0346620    0.0700520
     0.111915     0.169924     0.258561     0.415259     0.790606
diff 10%iles    -0.271130    -0.107422   -0.0457289   -0.0112329      0.00000
   0.00849533    0.0435091     0.106611     0.272507
stardiff 10%iles   -0.0429482   -0.0151537  -0.00460267      0.00000
  0.000603710   0.00648641    0.0137544    0.0252779    0.0535998
stardiff contour -excluded 0.005   -0.0429482    0.0535998