subtract 10%iles      0.00000   0.00330662    0.0458903    0.0895665
     0.137959     0.198251     0.283792     0.430438     0.786012
stardiff 10%iles    -0.238391    -0.105739   -0.0506657   -0.0145176
      0.00000   0.00882933    0.0457880     0.103424     0.244363
stardiff contour -excluded 0.005    -0.238391     0.244363