subtract 10%iles      0.00000    0.0178549    0.0928941     0.181744
     0.297450     0.460854     0.714403      1.16002      2.16991
stardiff 10%iles    -0.697424    -0.295545    -0.125063   -0.0247314
      0.00000    0.0277193     0.127296     0.296029     0.695064
stardiff contour -excluded 0.005    -0.697424     0.695063