subtract 10%iles  0.000428677   0.00621223    0.0109854    0.0156870
    0.0209370    0.0276661    0.0379028    0.0573921     0.112490
diff 10%iles   -0.0411754   -0.0215917   -0.0123582  -0.00561476  0.000289440
   0.00612640    0.0126925    0.0216432    0.0407295
stardiff 10%iles   -0.0249992   -0.0143091  -0.00810404  -0.00322369
   0.00113114   0.00540186    0.0100247    0.0158683    0.0263005
stardiff contour -excluded 0.005   -0.0249992    0.0263005