subtract 10%iles      0.00000   0.00105826    0.0468791     0.101710
     0.165312     0.244888     0.353241     0.520654     0.870742
stardiff 10%iles    -0.297916    -0.135448   -0.0643189   -0.0195263
      0.00000   0.00670458    0.0518683     0.126344     0.295931
stardiff contour -excluded 0.005    -0.297916     0.295931