subtract 10%iles      0.00000      0.00000    0.0178370    0.0419931
    0.0722189     0.112454     0.171844     0.276205     0.538985
stardiff 10%iles    -0.327119    -0.128185   -0.0532469   -0.0108302
      0.00000    0.0123743    0.0551795     0.130561     0.330082
stardiff contour -excluded 0.005    -0.327119     0.330082