subtract 10%iles      0.00000   0.00173740    0.0289590    0.0581127
    0.0911684     0.134626     0.199765     0.313105     0.595111
diff 10%iles    -0.224464   -0.0877049   -0.0370755  -0.00889206      0.00000
   0.00727344    0.0355911    0.0871396     0.226325
stardiff 10%iles   -0.0321053   -0.0109563  -0.00304666      0.00000
  0.000895008   0.00550652    0.0111764    0.0201108    0.0423550
stardiff contour -excluded 0.005   -0.0321053    0.0423550