subtract 10%iles      0.00000      0.00000    0.0258089    0.0605028
     0.103564     0.163824     0.257594     0.417929     0.782515
diff 10%iles    -0.292799    -0.118302   -0.0490717   -0.0115087      0.00000
   0.00849533    0.0449195     0.112279     0.285567
stardiff 10%iles   -0.0425052   -0.0147236  -0.00425662      0.00000
  0.000561856   0.00601454    0.0129993    0.0241865    0.0498476
stardiff contour -excluded 0.005   -0.0425052    0.0498476