subtract 10%iles      0.00000      0.00000    0.0256218    0.0633347
     0.110955     0.176520     0.278481     0.451898     0.839840
stardiff 10%iles    -0.487721    -0.196625   -0.0800571   -0.0165393
      0.00000    0.0185297    0.0824254     0.198715     0.489095
stardiff contour -excluded 0.005    -0.487721     0.489094