subtract 10%iles  -0.00103760   0.00476408   0.00948143    0.0141196
    0.0191841    0.0254655    0.0345230    0.0504761    0.0920277
diff 10%iles   -0.0409312   -0.0217054   -0.0124702  -0.00568008  0.000281334
   0.00619411    0.0128450    0.0218654    0.0407295
stardiff 10%iles   -0.0243865   -0.0141231  -0.00801961  -0.00318903
   0.00114576   0.00540698    0.0100247    0.0158179    0.0258821
stardiff contour -excluded 0.005   -0.0243865    0.0258821